Bionicle YGOPro Expansion

Boo! Tarakava jumpscare!

Now that I have your attention, it’s time to cover yet another way to build Rahi. Today’s Type are the Reptiles, lurking in wait and ambushing unsuspecting travelers. As a concept, this is pretty much entirely based on the very memorable Rahi Beasts quote describing Tarakava – “even if you can’t see them, they’re always there”. So let’s start with those, shall we?

Tarakava, Lizard Rahi

Normal Pendulum MonsterLevel 6 | Scale 1/1 | WATER Reptile | ATK 2600 / DEF 1200

[ Pendulum Effect ]
When an attack is declared involving an opponent’s monster: You can target 1 Reptile “Rahi” Monster Card in your Spell & Trap Zone; Special Summon it (but it cannot attack directly this turn), and if you do, destroy that opponent’s monster. You can only use this effect of “Tarakava, Lizard Rahi” once per turn.
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[ Flavor Text ]
The first thing to remember about Tarakava is that even if you can’t see them, they are always there.

Bionicle: Challenge of the Rahi (v4.7.3)

Sand Tarakava, Lizard Rahi

Normal Pendulum MonsterLevel 6 | Scale 8/8 | EARTH Reptile | ATK 2300 / DEF 1800

[ Pendulum Effect ]
Reptile “Rahi” monsters in your leftmost or rightmost Main Monster Zone gain this effect.
●Once per turn (Quick Effect): You can place this card face-up in your Spell & Trap Zone as a Continuous Spell, or if it is a Pendulum Monster, you can place it in your Pendulum Zone instead.
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[ Flavor Text ]
Sand Tarakava are slightly smaller than their Tarakava relatives. Their hunting method is to hide under the sand and wait for unsuspecting prey to come near.

Bionicle: Challenge of the Rahi (v4.7.3)

This pair of punchy Pendulums consists of the classic version that appears from beneath the sea, and the less-known recolor that hides under the sands. Which means the former facilitates the “ambush” – where a lurking Reptile jumps forward to eviscerate an opponent’s monster that has carelessly gotten involved in battle – and the latter sets it up by granting your Reptiles the ability to slide into lurking position. In the simplest case, you have these two cards in the Pendulum Zones, battle occurs, the Tarakava jumps out and starts punching, and then it goes back to do the same thing next turn.

As for less simple cases, you may notice these effects also work with non-Pendulums in the regular Spell & Trap Zones. For example, you could put some Synchros there.

Ranama, Lava Lurker Rahi

Synchro Effect MonsterLevel 4 | FIRE Reptile | ATK 2200 / DEF 600

1 “Rahi” Tuner + 1+ non-Tuner monsters
When your opponent activates a card or effect (Quick Effect): You can target 2 face-up monsters on the field, including this card; place them face-up in their owners’ Spell & Trap Zones as Continuous Spells. You can only use this effect of “Ranama, Lava Lurker Rahi” once per turn. Once per turn, during the Standby Phase, if this card is a Continuous Spell: You can destroy 1 other Monster Card in a Spell & Trap Zone, and if you do, Special Summon this card.

Bionicle: Challenge of the Rahi (v4.7.3)

The Ranama is built for just that purpose. In fact, it dives down in that direction on its own along with its prey when it senses motion (i.e., an effect activation) and also returns on its own once it has finished digesting. Coupled with a Tarakava ready to pounce on anyone foolish enough to attempt the classic out of “just hit over it”, this is sure to be a thorn in an opponent’s side one way or another.

Tarakava-Nui, Lizard King Rahi

Synchro Effect MonsterLevel 7 | WATER Reptile | ATK 2900 / DEF 0

1 “Rahi” Tuner + 1+ non-Tuner monsters
If this card is Special Summoned: You can target up to 2 cards your opponent controls; this card loses exactly 1000 ATK for each targeted card, and if it does, shuffle them into the Deck. You can only use this effect of “Tarakava-Nui, Lizard King Rahi” once per turn. Loses 1000 ATK during your Main Phase only. While this card is a Continuous Spell, “Rahi” cards you control cannot be destroyed by your opponent’s card effects.

Bionicle: Challenge of the Rahi (v4.7.3)

If you’d like some more impact, how about a Tarakava-Nui? It doesn’t have the built-in mobility in either direction, but with help from its smaller (or rather unmutated) relatives, it can easily be put in the backrow as blanket destruction protection and brought forward whenever you need its service of PUNCH THINGS SO HARD THEY GO BACK TO THE DECK. The way this is paid for with ATK creates a slightly fancy dynamic where you get to punch two things if and only if you bring it out outside your own Main Phase as the Reptiles do – a regular old Synchro Summon any Rahi deck can perform will only get you one.

Okay, but how are we making these Synchros? This is the cue to look at the Reptile Rahi Tuners, and as it turns out, there aren’t any. Shit. Guess we’re playing Insects?

While that works to some extent, having an entire substrategy entirely reliant on that shared toolbox doesn’t feel right either. So, with no Reptile Tuners present or forthcoming, we’ll have to snake our way into tunerless Synchro Summons somehow.

Bog Snake, Venomous Rahi

Pendulum Effect MonsterLevel 4 | Scale 5/5 | WATER Reptile | ATK 1500 / DEF 1500

[ Pendulum Effect ]
Once per turn: You can destroy up to 2 “Rahi” Monster Cards you control, and if you do, Special Summon 1 Reptile “Rahi” Synchro Monster from your Extra Deck whose Level is less than or equal to their total Levels (this is treated as a Synchro Summon), then place it face-up in your Spell & Trap Zone as a Continuous Spell.
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[ Monster Effect ]
If this card declares an attack: You can inflict 300 damage to your opponent for each Monster Card in your Spell & Trap Zone. If this card is destroyed: You can place 1 Reptile “Rahi” monster from your GY or face-up Extra Deck face-up in your Spell & Trap Zone as a Continuous Spell. You can only use each effect of “Bog Snake, Venomous Rahi” once per turn.

Bionicle: Challenge of the Rahi (v4.7.3)

The Bog Snake does just that from the comfort of the Pendulum Zone, acquiring the necessary Levels by destroying your Monster Cards – including those stuck in the backrow such as itself, making this a one-card way to access a Ranama. One card more (with at least Level 3), and you’ll even get a Tarakava-Nui. Of course those monsters themselves then immediately go into hiding (before you get a chance to trigger on-Summon effects, it’s worth noting), but bringing them back out is the whole point of this strategy anyway.

In fact, destroying the Bog Snake with its own effect to make a Ranama will also let you put a Reptile into your backrow – even itself, if necessary. That means your lurking Ranama is already well fed and ready to jump to the Monster Zone in the next Standby Phase … which will trigger the Snake again. See, who needs Tuners anyway?

Also if you get it on the field and attack it burns a little, because venomous.

Sample Deck

Since there aren’t a lot of Reptiles just yet, the deck is built as a hybrid with Insects, using the usually less splashable Kofo-Jaga engine to get easy access to the Nui-Kopen and thereby a variety of Spells and Traps. The trick here is that we actually don’t particularly care about getting locked out of the monster effects of our Reptiles, because several of our major plays – like making a Synchro with the Bog Snake or ambushing with the Tarakava – are performed entirely through effects those monsters have while treated as Spells, bypassing the lock entirely. The Insect+Reptile combination also meshes well with the use of Samurai Beetle as an additional extender, capable of natively going into a Ranama together with any of the Level 1 Tuners.

To take advantage of our nearly free searches, this build also includes some of the more situational Rahi Spells/Traps. Siege because it meshes perfectly with our goal to re-summon monsters of both high and low Levels from the Spell & Trap Zone every turn (and there’s literally a Tarakava on it), Devastation because it allows trading Rahi for removal even if they’re lying in wait in the backrow, Ussalry as a way to recycle banished cards, and Encounter in the Drifts for that ambush flavor.

The Extra Deck contains the Rahi needed for both the Reptile and Insect halves of the deck, as well as some standard generic links including Beyond and Exceed the Pendulum. There’s also a Ragnaraika Mantis Monk so we have a way to trigger the Beetle’s revival effect, and a Dawn Dragster since sometimes we do get to make a Level 7 Synchro turn 1, and this one can deal with the significant threat that certain Spells and Traps pose to our entire on-field setup. As for the side deck, it’s yet another approach to ratios for swapping between the handtrap Insect Rahi plus general good stuff.

In the usual fashion, there’s a sample video showing all this working.

Conclusion

Reptiles are a fairly small group of Rahi, but one with a clear focus: Moving between the Monster Zones and the Spell & Trap Zones, leading to a general style of play where you repeatedly stow away and resummon the same monsters while getting in the way of anything the opponent tries to do on the field. Since not having many cards means you can’t really make a pure deck out of them, the best in-archetype approach available right now is probably a hybrid with Insects – which happens to be a Ragnaraika combination, so that’s convenient.

They’ve been crawling all over the decklists of the last few articles, so it might be about time to get out our magnifying glass and take a close look at the Insect-Type segment of the Rahi archetype. Actually, forget the magnifying glass, even on the small side these things look pretty large for bugs. Entomophobes beware.

Fikou, Spider Rahi

Tuner Effect MonsterLevel 1 | EARTH Insect | ATK 600 / DEF 400

If this card is in your hand or GY: You can target 1 Level 2 or higher “Rahi” monster you control; reduce that target’s Level by 1, and if you do, banish this card, then Special Summon 1 “Fikou, Spider Rahi” from your hand or Deck. You can only use this effect of “Fikou, Spider Rahi” once per turn.

Bionicle: Challenge of the Rahi (v4.7.3)

And arachnophobes too, because we’re starting with a widely beloved little orange spooder. The Fikou is a prime example of Insects acting as splashable Tuners in other Rahi builds, in this case by costing merely a single Level to bring itself to the field – or rather another copy of itself, if we want to be completely accurate. Needing to run multiples is one deliberate weakness this effect has compared to its much more absurd inspiration Level Eater.

Fikou-Nui, Tarantula Rahi

Link Effect MonsterLink-1 [↗] | EARTH Insect | ATK 1000

1 Level 2 or lower “Rahi” monster
If this card is Link Summoned: You can target 1 “Rahi” monster in your GY or banishment; add it to your hand, then place 1 card from your hand on the bottom of the Deck. You can only use this effect of “Fikou-Nui, Tarantula Rahi” once per turn. You can Tribute this card; Special Summon 1 Level 4 or lower “Rahi” monster from your hand or GY, and if you do, you can increase or decrease its Level by 1.

Bionicle: Challenge of the Rahi (v4.7.3)

Now that cost of 1 Level may sometimes mess with your desired Synchro lines, which is where the Fikou’s larger relative Fikou-Nui comes in to fix things. This somehow-canon miniboss from a cancelled video game isn’t just Level modulation, but also a fairly flexible recycling option on summon, letting you add your spent monsters back to the hand at a cost or back to the Deck for free (returning to the Extra Deck doesn’t cost you a card either thanks to the way it’s worded).

• Hoto
• Cliff Bug
• Electric Bug

Hoto

Hoto, Firebug Rahi

Tuner Effect MonsterLevel 1 | FIRE Insect | ATK 600 / DEF 300

If this card is in your hand (Quick Effect): You can banish 1 “Rahi” monster from your GY or face-up Extra Deck; Special Summon this card, and if you do, you can destroy 1 Spell/Trap your opponent controls. You can only use this effect of “Hoto, Firebug Rahi” once per turn.

Bionicle: Challenge of the Rahi (v4.7.3)

Cliff Bug

Cliff Bug, Hopper Rahi

Tuner Effect MonsterLevel 1 | WATER Insect | ATK 500 / DEF 500

If this card is in your hand (Quick Effect): You can banish 1 “Rahi” monster from your GY or face-up Extra Deck; Special Summon this card, and if you do, you can make 1 face-up monster you control be unaffected by Spell/Trap effects until the end of this turn. You can only use this effect of “Cliff Bug, Hopper Rahi” once per turn.

Bionicle: Challenge of the Rahi (v4.7.3)

Electric Bug

Electric Bug, Zapping Rahi

Tuner Effect MonsterLevel 1 | LIGHT Insect | ATK 600 / DEF 300

If this card is in your hand (Quick Effect): You can banish 1 “Rahi” monster from your GY or face-up Extra Deck; Special Summon this card, and if you do, you can negate the effects of 1 face-up monster your opponent controls, until the end of this turn. You can only use this effect of “Electric Bug, Zapping Rahi” once per turn.

Bionicle: Challenge of the Rahi (v4.7.3)

The other Level 1 Insect Rahi Tuners you’ll see in a lot of builds cover three more Attributes, leaving only DARK and WIND open when combined with the Fikou … for now. All of them work the same way: Banish the leftovers of another Rahi, Special Summon, apply a bonus effect – all Quick Effects so you can use these bonuses for disruption when appropriate.

The Hoto burns through the opponent’s backrow, the Cliff Bug from Ga-Wahi protects monsters in a way that’s just Nokama if you squint, and the Electric Bug zaps effect negation on monsters. Being optional bonus effects, none of these target, so they can be quite tricky to deal with.

What do you banish to fuel these effects? Well, any Rahi will do, so that’s good for splashability. But for actually Insect-centric decks, there’s one particular option that offers top efficiency.

Kofo-Jaga, Scorpion Rahi

Pendulum Effect MonsterLevel 4 | Scale 6/6 | FIRE Insect | ATK 1200 / DEF 1900

[ Pendulum Effect ]
If your opponent Special Summons a monster(s) (except during the Damage Step): You can destroy this card, and if you do, that monster(s) loses 1200 ATK/DEF, until the end of this turn.
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[ Monster Effect ]
If a face-up Spell/Trap is on the field (Quick Effect): You can Tribute this card; add 1 Insect “Rahi” monster from your Deck to your hand, except “Kofo-Jaga, Scorpion Rahi”. If this card is banished while you control a “Rahi” Tuner: You can Special Summon this card, and if you do, increase its Level by 1, also you cannot activate non-Insect monster effects for the rest of this turn. You can only use each effect of “Kofo-Jaga, Scorpion Rahi” once per turn.

Bionicle: Challenge of the Rahi (v4.7.3)

Not only does the heat-loving Kofo-Jaga search you Insect Rahi including all the above Tuners when provided the cozy warmth of a Spell or Trap, it also shies away from the light straight into the face-up Extra Deck, ready to be banished. And once that happens, it’s suddenly right back on the field (and you’re Insect locked). Also it has a stat debuff Pendulum Effect, ya know the drill, beware its stinger tail and all that.

One detail not to be overlooked is the +1 Level gained upon returning, which sets us up for our primary payoff without any cumbersome Fikou-Nui steps in between.

Nui-Kopen, Wasp Rahi

Synchro Effect MonsterLevel 6 | WIND Insect | ATK 2100 / DEF 2000

1 “Rahi” Tuner + 1+ non-Tuner monsters
If this card is Special Summoned: You can take 1 “Rahi” Spell/Trap from your Deck, and either add it to your hand or send it to the GY. During the Main Phase (Quick Effect): You can Tribute 1 monster; Special Summon 1 Level 2 or lower “Rahi” Tuner from your hand or GY, but negate its effects. You can only use each effect of “Nui-Kopen, Wasp Rahi” once per turn.

Bionicle: Challenge of the Rahi (v4.7.3)

That payoff is the Nui-Kopen, an archetypal Spell/Trap search on a Level 6 Synchro, and its targets open up some powerful possibilities. Before looking at the list, let it also be said that its secondary ability to tag out for a Tuner doubles as an Imperm dodge.

Now, Rahi Spells and Traps. These are generally generic support much like the Tuners above, but having an Insect deck whose whole bread and butter is getting them to hand or GY means some options could make the cut that most builds don’t bother using. Here’s a quick rundown.

Rahi Hive Showdown

Rahi Hive Showdown

Spell

If your opponent controls 2 or more monsters with 2000 or more ATK: Take control of the monster your opponent controls with the highest original ATK (your choice, if tied), but it cannot activate its effects while you control it. If you control a “Rahi” Synchro Monster: You can banish this card from your GY, then target 1 monster your opponent controls; take control of it until the End Phase, but it cannot declare an attack. You can only use 1 “Rahi Hive Showdown” effect per turn, and only once that turn.

Bionicle: Challenge of the Rahi (v4.7.3)

Perhaps the most topical of them all is Rahi Hive Showdown, a monster stealing card themed entirely around Lewa’s brief period under the control of an infected mask – an incident that prominently involved a Nui-Kopen. Accordingly, both that monster and this Spell have some deliberate synergies built in beyond the blatantly obvious: The Nui-Kopen can Tribute whatever you steal for its second effect to get some immediate value, and since it is itself a Rahi Synchro, using its effect to dump Showdown will enable the GY effect that tends to be much easier to use than the main one.

Infection of the Rahi

Infection of the Rahi

Continuous Trap

You can only control 1 “Infection of the Rahi”. Each time a monster your opponent controls activates its effect while you control a “Rahi” Monster Card, place 1 Comet Counter on that opponent’s monster (max. 1) after that effect resolves. Monsters with a Comet Counter cannot attack, also each time 1 leaves the field, inflict 400 damage to its owner. During your Battle Phase or your opponent’s Main Phase: You can banish this card from your GY or your face-up Spell & Trap Zone; take control of all monsters your opponent controls with a Comet Counter, until the end of this turn.

Bionicle: Challenge of the Rahi (v4.7.3)

While also based on an Insect-related event, Infection of the Rahi is probably too much of a gimmick to be worthwhile even when you can easily search it. The ability to snatch away any monsters that used their effects previously can serve as some decent disruption, but between the turn of setup needed and the potential of playing around it, this is definitely one of those “you have to want it” cards.

Devastation of the Rahi

Devastation of the Rahi

Spell

Destroy any number of other “Rahi” cards you control, and if you do, send the same number of cards your opponent controls to the GY. You can banish this card and 1 “Rahi” monster from your GY, then target 1 card on the field; destroy it, or if you control a “Rahi” Synchro Monster, you can banish it instead. You can only use 1 “Devastation of the Rahi” effect per turn, and only once that turn.

Bionicle: Challenge of the Rahi (v4.7.3)

Based on the battle that once devastated the Charred Forest, Devastation of the Rahi is a removal option that works from both hand and GY, with different dynamics in each case. If activated from the hand, it will clear as many cards as you’re willing to invest while also bypassing targeting and destruction protections, but overall works out to a -1 in card advantage for you. Using it from the GY is much cheaper, but only goes after a single properly designated target, and only offers plain old destruction – unless you have a Synchro out, then it can also banish. Overall, the big consequence of this card’s existence is that it enables the Nui-Kopen to act as removal in a variety of ways, making it more of a threat against established boards.

The Ussalry Arrives

The Ussalry Arrives

Quick-Play Spell

(This card is always treated as a “Rahi” and “Matoran” card.)
Target 1 face-up monster you control; Special Summon 1 “Rahi” Pendulum Monster Card with the same Type or Attribute from your Pendulum Zone, GY, or face-up Extra Deck, but banish it during the End Phase. During your Main Phase: You can shuffle this card and 1 of your banished “Rahi” cards into the Deck, then draw 1 card. You can only use 1 “The Ussalry Arrives” effect per turn, and only once that turn.

Bionicle: Challenge of the Rahi (v4.7.3)

As hybrid Matoran/Rahi support, The Ussalry Arrives acts as a fairly flexible extender with the rather unique trait of even being able to Summon out of the Pendulum Zone. But the interesting synergy with Insects, particularly the Tuners that banish stuff, lies in its alternate effect to recycle itself from the GY and a banished “Rahi” card for a draw. Note that says card, not monster, so putting your other Spells and Traps back into rotation is also a possibility!

Siege of the Rahi

Siege of the Rahi

Continuous Spell

If a “Rahi” monster(s) is Normal or Special Summoned to your field, except during the Damage Step: You can activate 1 of these effects, based on the Level of that monster(s) on the field;
●4 or lower: Draw 1 card. ●5 or higher: Change 1 face-up monster on the field to face-down Defense Position.
If a Level 5 or higher “Rahi” monster you control would be destroyed by battle or card effect, you can banish this card from your field or GY instead. You can only use each effect of “Siege of the Rahi” once per turn.

Bionicle: Challenge of the Rahi (v4.7.3)

Siege of the Rahi, while depicting the Reptile-Type Tarakava, theoretically has significant applications in Insects as well. Specifically, our key play of Special Summoning a Level 1 Tuner on the opponent’s turn by banishing a Kofo-Jaga that then returns as a Level 5 monster is by itself capable of triggering both of the on-field options, landing you an extra card and your opponent a face-down monster clogging the field. I say “theoretically” because I wasn’t running this in my test Insect deck, but thinking about it in hindsight it would go kinda crazy.

Then there’s some other targets with no particular application to Insect Rahi, such as Encounter in the Drifts or Rahi from the Depths , and one I left out because it’s much more broadly generic and also segues well into our next point: Rahi Swarm . The segue being that it depicts certain large Insect Rahi that make up one half of this Type’s Normal Pendulum pair.

Nui-Rama, Fly Rahi

Normal Pendulum MonsterLevel 5 | Scale 1/1 | WIND Insect | ATK 1800 / DEF 1700

[ Pendulum Effect ]
You can target 1 face-up monster you control; Special Summon 1 Insect “Rahi” monster with a lower or equal Level from your Deck in Defense Position, also you cannot Special Summon monsters for the rest of this turn, except Insect monsters. You can only use this effect of “Nui-Rama, Fly Rahi” once per turn.
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[ Flavor Text ]
A harsh buzz fills the air…a rustle of wings…a dark shape flying out of the sun…the warning signs of a Nui-Rama attack.

Bionicle: Challenge of the Rahi (v4.7.3)

Nui-Jaga, Scorpion Rahi

Normal Pendulum MonsterLevel 5 | Scale 8/8 | EARTH Insect | ATK 2300 / DEF 700

[ Pendulum Effect ]
If an Insect “Rahi” monster(s) is Special Summoned to your field (except during the Damage Step): You can target 1 face-up monster on the field; destroy it, and if it was an Insect “Rahi” monster, you can add 1 Insect “Rahi” monster with a different name from your Deck to your hand. You can only use this effect of “Nui-Jaga, Scorpion Rahi” once per turn.
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[ Flavor Text ]
Nui-Jaga commonly hunt in packs, which helps to make up for the fact that they are not very fast. One of the creatures will drive prey forward, usually into a canyon, where others wait to strike. Once the target is surrounded, the Nui-Jaga will call to each other. Their cries have been compared to the sound of glass breaking.

Bionicle: Challenge of the Rahi (v4.7.3)

The Nui-Rama lives up to its swarming reputation by reinforcing the monsters already on the field with an Insect straight from the Deck, at the cost of an Insect lock. I made the target required for this completely generic “to synergize with the Nui-Kopen/Showdown combo”, but realistically the Nui-Kopen itself is all you need in that case, so this really is just a bit of an oversight. Oopsie.

The Nui-Jaga is also direct support for the Insect-centric line of play featuring its smaller cousin Kofo-Jaga, sensibly enough. While it doesn’t apply any further locks, its intent is basically to trigger when you bring out the small Tuners, getting you either an extra hit of monster removal or an opportunity to trade the bug you just summoned for another one that can then act as disruption later in the turn. And if you ever find yourself in a mirror match, the value just goes straight through the roof.

Kirikori-Nui, Locust Rahi

Synchro Effect MonsterLevel 3 | WIND Insect | ATK 1400 / DEF 1000

1 “Rahi” Tuner + 1+ non-Tuner monsters
If this card is Synchro Summoned: You can send 1 “Rahi” card from your Deck to the GY; this card gains 500 ATK. You can only use this effect of “Kirikori-Nui, Locust Rahi” once per turn. You can banish this card until the Standby Phase of your next turn; destroy 1 card on the field.

Bionicle: Challenge of the Rahi (v4.7.3)

Finally, a bit of an odd one out: A Synchro monster you can barely Summon on account of its low Level. Nibbling off a Level 3 Rahi with a Fikou will get you there, but it’s not really something that comes up. If you were to make the Kirikori-Nui, though, you’d be rewarded with sending a card from Deck to GY as cost, a frankly pretty broken ability that probably only ended up here for lack of better ideas and because it really doesn’t matter when you barely make the thing. The effect with proper lore significance is actually the second one, where this voracious locust ravages the field and vanishes, only to return at some point in the future. That part isn’t once per turn, so you can properly do this with a whole swarm even. Well, a swarm of 3.

Sample Deck

By their nature, Insect Rahi cards appear in all kinds of builds focused on different Types, so for their solo showing I decided to cram them into a good ol’ Insect pile. Which isn’t something I have more than passing familiarity with, so if anything looks off here all I can say is, uh, sorry.

What’s pretty much going on here is that the standard Insect cards – Resonance Insect, Gokipole, Beargram, Samurai Beetle – set up a Link climb into something like Invincible Atlas or even just I:P/S:P stuff, with Picofalena for recycling and plusses along the way. Beetroopers add more extenders and the ability to get Fly & Sting for negation, and finally the Rahi cards supplement all of this with a Synchro Engine as well as the Tuners’ handtrap effects.

Generally, you try to make a Nui-Kopen to get your hand on one of the Rahi Spell cards included. Here, that means the standard option of Rahi Swarm as a searcher and the pair of Rahi Hive Showdown and The Ussalry Arrives for situational utility and flavour. Alternatively, if you procure an additionaly body to fill up the Levels, you can also go into Diabolantis as kind of a bridge into the other Insect stuff. A Kirikori-Nui is here in theory, but looking at this Deck I’m strongly doubting it even has the ability to make that card. You’d have to Fikou-Nui for a Level 3 Kofo-Jaga and then Fikou that further down to 2, I guess? Yeah, probably not happening.

As for stuff that does happen, you can see some of that in the sample video below.

Conclusion

Unlike other Types, most Insect Rahi are explicitly built to be included generically in Rahi deck. In the Main Deck, they offer their services as Tuner/handtrap hybrids. In the Extra Deck, the Nui-Kopen specifically is your Synchro bridge to those Rahi Spells and Traps any of the various builds would love to access. Together, these tools give Insects a place in most any Rahi deck.

Beyond that, however, there are also the Insects who facilitate a more Type-specific playstyle by granting you massive amounts of free material at the cost of an Insect lock. Bug-based disruption and searching Spells/Traps are still the main plays with this approach, but additionally you have ways to easily bring out non-Tuners and refuel the Tuners in your hand. With clever sequencing, it is even possible to use these advantages as a more generic engine, but they’re most at home in something like the Insect pile above that doesn’t care about the locks to begin with.

Coming right off the Beasts of the land and sky, we continue with the … stuff that dwells under the sea. Quite a few Fish and Aqua Rahi made their debut from BCOR / BBTS / BPEV, and in contrast to the Beast-Warrior snub, Sea Serpents are technically included in the range of support because they will be joining the archetype at some point in the future. All that planning in advance is paying off!

So what is it that sets this trio of Types apart from previously considered Rahi to justify being treated as their own deck? Probably the biggest point is that they do not really aim to combo into Synchro boss monsters, but rather directly use their small pieces as recurring disruption in more of a low-investment control style of gameplay. Perhaps the best point to start from is therefore the specimen that mainly achieves this function in an offensive capacity: The Ruki.

Ruki, Fish Rahi

Tuner Effect MonsterLevel 2 | WATER Fish | ATK 700 / DEF 100

If this card is Normal or Special Summoned: You can add 1 Fish, Sea Serpent, or Aqua “Rahi” Pendulum Monster from your Deck to your hand, then discard 1 card. You can only use this effect of “Ruki, Fish Rahi” once per turn. (Quick Effect): You can banish both this card from your hand or field and 1 “Rahi” monster in your GY or face-up Extra Deck; destroy 1 monster your opponent controls.

Bionicle: Challenge of the Rahi (v4.7.3)

The magic here is in the last line – “destroy 1 monster your opponent controls”, throwing this fish and its chompy biters as a potentially devastating wedge into their plans. Before that, of course, is a cost that loses you not only the Ruki from hand or field but also requires some banishing fodder in GY and Extra Deck … but then before even that, we have a convenient effect that provides just that setup if you manage to Summon first. So ideally you want to put this on the field to take advantage of that ability, but once things are rolling it’s also capable of lurking in your hand as a nasty surprise.

Of course, if nasty surprises from the hand are what you want, you can’t discount the Ruki’s partner in crime for the very early game. Meet the Shore Turtle.

Shore Turtle, Shelled Rahi

Tuner Effect MonsterLevel 2 | WIND Aqua | ATK 0 / DEF 1200

Your opponent cannot target Fish, Sea Serpent, and/or Aqua “Rahi” Monster Cards you control with card effects. If your opponent activates a card or effect: You can banish 2 “Rahi” cards from your hand and/or face-up field, including this card; Special Summon 1 Fish, Sea Serpent, or Aqua “Rahi” Tuner from your Deck. You can only use this effect of “Shore Turtle, Shelled Rahi” once per turn.

Bionicle: Challenge of the Rahi (v4.7.3)

This flying amphibian (who even came up with that?) is the key that unlocks this deck’s potential for playing on turn 0 – the part of the game that’s often most vulnerable to disruption. Being a slow and harmless creature itself, it won’t react with a Quick Effect immediately when your opponent does something … but once it eventually notices, it does trigger on a new chain to bring out something like a Ruki, which will then also trigger on summon, and suddenly those monsters on the opponent’s field meant to go into a setup combo are looking awfully chompable. Alternatively, you could also go into another Shore Turtle for passive targeting protection if you’re already happy with your destructive capabilities. However, all this only works if you have another Rahi card to banish along with the turtle, so you’ll need to draw the right hand and having it stopped will hurt quite a bit.

Lightfish, Luminescent Rahi

Tuner Effect MonsterLevel 1 | WATER Fish | ATK 700 / DEF 100

While face-up on the field, this card becomes LIGHT. (Quick Effect): You can banish this card from your hand or GY, then target 1 monster your opponent controls; apply 1 of these effects.
●Change its battle position. ●Discard 1 card, and if you do, that face-up monster cannot activate its effects this turn.

Bionicle: Challenge of the Rahi (v4.7.3)

Third in the lineup of small Quick Effect stuff is a Level 1 Tuner original to the recent BCOR overhaul, representing the Lightfish that illuminate the huts of Ga-Koro . This one is more focused on the gimmick of also being useful in that village’s strategy as a very easily accessible, low-cost effect you can use to increase chain link numbers on the opponent’s turn, but it also isn’t totally out of place in the Rahi deck. Here, it acts as a very soft disruption, and possibly another way to enable a Ruki in the hand by discarding with the more powerful of its two effects.

So I think the idea is clear at this point – banish a lot of things, fuck with the opponent’s field, and hope they get annoyed and leave before they notice you’re pretty much out of resources. Right? Not quite, we haven’t yet seen the Pendulum Monsters that bring the essential recursive aspect into this whole loop.

Makika, Toad Rahi

Pendulum Effect MonsterLevel 3 | Scale 1/1 | EARTH Aqua | ATK 600 / DEF 2100

[ Pendulum Effect ]
During the End Phase: You can target 1 of your banished Fish, Sea Serpent, or Aqua “Rahi” monsters, except “Makika, Toad Rahi”; add it to your hand. You can only use this effect of “Makika, Toad Rahi” once per turn.
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[ Monster Effect ]
During the Main Phase, if this card is in your hand (Quick Effect): You can target 1 Fish, Sea Serpent, or Aqua “Rahi” monster you control; return it to the hand, and if you do, Special Summon this card in Defense Position. If this card is banished: You can add this card to your Extra Deck face-up or place it in your Pendulum Zone, then take 1000 damage. You can only use each effect of “Makika, Toad Rahi” once per turn.

Bionicle: Challenge of the Rahi (v4.7.3)

Takea, Shark Rahi

Pendulum Effect MonsterLevel 4 | Scale 5/5 | WATER Fish | ATK 1800 / DEF 900

[ Pendulum Effect ]
If your Fish, Sea Serpent, and/or Aqua “Rahi” monster(s) is banished: You can target 1 of those monsters and 1 card your opponent controls; place the first target on the bottom of the Deck, and if you do, destroy the second target. You can only use this effect of “Takea, Shark Rahi” once per turn.
—————————————-
[ Monster Effect ]
If this card is Normal or Special Summoned: You can banish up to 2 “Rahi” Monster Cards from your hand and/or field; add that many Fish, Sea Serpent, and/or Aqua “Rahi” monsters with different names from your Deck to your hand, except “Takea, Shark Rahi”. If this card is banished: You can target 1 card you control; destroy that card, also, after that, add this card to your Extra Deck face-up or place it in your Pendulum Zone. You can only use each effect of “Takea, Shark Rahi” once per turn.

Bionicle: Challenge of the Rahi (v4.7.3)

The Makika and Takea form a pair, with the former having a defensive and the latter an offensive focus. This is most apparent in the Pendulum Zones, where the shark sends the things you keep banishing for cost back into the Deck to cause even more destruction, while the toad hands them back to you in the End Phase to enable plays for the next turn. On the field, the main one to watch out for is the Takea, as it pays its own banishing cost to search out just the tools you need, but the Makika’s Quick Effect to Special Summon itself can also put in some serious work such as letting a Ruki safely dodge a boardwipe.

Finally, both of them share an ability that vastly improves the math on the supposed massive loss of cards incurred by all the banishing: If they themselves are used this way, they will, in exchange for some sort of drawback, swim right back to either the Extra Deck or the Pendulum Zone and continue to act as valuable resources. In the voracious Takea’s case, the drawback is that you must offer it another of your cards as food, while the Makika causes you damage with its poisonous skin.

And that was, as far as the initial BCOR wave is concerned, all the pieces involved in the Fish/Sea Serpent/Aqua strategy! Well, except for one that didn’t really ever come up. You see, since the small monsters are, technically, Tuners, we do have the ability to go into Synchros. And there is one really big one that does align with these Types: The Mana Ko, secret guardian of Makuta’s lair.

Mana Ko, Guardian Rahi

Synchro Effect MonsterLevel 11 | LIGHT Aqua | ATK 3500 / DEF 2800

1+ “Rahi” Tuners + 1+ non-Tuner “Rahi” monsters
Control of this card cannot switch. Other cards you control cannot be destroyed by your opponent’s card effects. (Quick Effect): You can banish this card; Special Summon any number of Fish, Sea Serpent, and/or Aqua “Rahi” monsters from your GY and/or banishment, whose total Levels equal 10 or less, and if you do, banish 1 card on the field. You can only use this effect of “Mana Ko, Guardian Rahi” once per turn.

Bionicle: Challenge of the Rahi (v4.7.3)

This Level 11 bungus can, for example, be made by tuning a Ruki, a Shore Turtle, a Takea, and a Makika (2+2+4+3) … and I think you can see just why it never came up. If you were ever to find yourself in that situation, it could kind of be worth it for the big body, blanket protection, and ability to tag out into almost all of its materials with bonus removal (warning: may hit your own cards). But you probably don’t really need it to win the game at that point.

However, the tag-out concept seemed so good that it ended up inspiring the other, much more reasonably positioned Synchro Monster introduced with the BBTS support.

Waikiru, Walrus Rahi

Synchro Effect MonsterLevel 5 | WATER Aqua | ATK 1800 / DEF 1000

1 “Rahi” Tuner + 1+ non-Tuner monsters
If this card is Special Summoned: You can banish 1 Fish, Sea Serpent, or Aqua “Rahi” monster from your Deck. (Quick Effect): You can banish this card; Special Summon up to 2 Fish, Sea Serpent, and/or Aqua “Rahi” monsters from your GY and/or banishment, whose total Levels equal 4 or less. You can only use 1 “Waikiru, Walrus Rahi” effect per turn, and only once that turn.

Bionicle: Beware the Swarm (v4.7.3)

For the much more pragmatic cost of a Ruki/Turtle and a Makika (or a Lightfish and a Takea), you get a topical way to get another monster from your Deck into rotation, and on the next turn you can make a swap into a pair of Tuners, or a single Pendulum, or whatever else you can fit in 4 Levels. Also important to keep in mind that your Pendulum Scales can recycle this after it banishes itself for cost, so you get to do that move repeatedly if everything goes smoothly. And I guess I should note that targeting this with a banished Takea and then chaining it will still let the Takea fully resolve, that’s specifically why that effect is worded the way it is.

Speaking of Pendulum Scales, the second wave also introduced an additional pair of those, though rather than a proper pair like the first two, they act as more disconnected, situational options.

Ghekula, Amphibious Rahi

Pendulum Effect MonsterLevel 4 | Scale 5/5 | WATER Aqua | ATK 1400 / DEF 1400

[ Pendulum Effect ]
If another card(s) on the field would be destroyed by card effect while you control a Fish, Sea Serpent, or Aqua “Rahi” Monster Card, except “Ghekula, Amphibious Rahi”, you can destroy this card instead.
—————————————-
[ Monster Effect ]
If this card is destroyed: You can target 1 monster in your opponent’s GY or 1 of your banished Fish, Sea Serpent, or Aqua “Rahi” monsters; place it on the bottom of the Deck, and if you returned it to your Deck, banish 1 random card from your opponent’s hand. If this card is banished: You can add this card to your Extra Deck face-up or place it in your Pendulum Zone, and if you do, banish 1 card from your GY. You can only use each effect of “Ghekula, Amphibious Rahi” once per turn.

Bionicle: Beware the Swarm (v4.7.3)

The more traditional Ghekula is already somewhat weird in that its Pendulum Effect is destruction replacement to supplement the Shore Turtle’s protection, and only the monster effect that is then triggered by that has the usual capability to recycle your own banished monsters. This is based on the Matoran superstition that harming a Ghekula, even by accident, invites misfortune – so if it “accidentally” blows up while they try to destroy something else, it’s going to take something either out of their GY, or straight out of their hand if you have banishment setup. It also does the usual self-recycle if banished itself, this time demanding payment via the GY (the more thematic option would have been discarding from your hand, but it just isn’t worth it).

Keras, Crab Rahi

Pendulum Effect MonsterLevel 3 | Scale 1/1 | WATER Aqua | ATK 1400 / DEF 500

[ Pendulum Effect ]
If a Level 4 or lower WATER monster(s) is banished from your field, GY, and/or face-up Extra Deck, even during the Damage Step: You can target 1 of those monsters; Special Summon it, and if you do, destroy this card. You can only use this effect of “Keras, Crab Rahi” once per turn.
—————————————-
[ Monster Effect ]
You can Special Summon this card (from your hand) by banishing 1 Fish, Sea Serpent, or Aqua monster from your GY. You can only Special Summon “Keras, Crab Rahi” once per turn this way. Before damage calculation, if a Level 4 or lower monster you control attacks a Defense Position monster: You can banish 1 “Rahi” monster you control; destroy that Defense Position monster.

Bionicle: Beware the Swarm (v4.7.3)

The Keras, on the other hand, entirely abandons the premise of being recurring banish fodder, instead adopting a role of somewhat more generic support that could also go along with Ga-Matoran (who once rode them into battle against the Bohrok). In the Pendulum Zone, it has the most powerful recycling effect out of all of these and Special Summons the banished monster right back to the field, with the two drawbacks that it only works with WATER monsters (so no Shore Turtle or Makika) and destroys itself after doing this once. Being able to Special Summon itself while generating banishment setup (in reference to how they were tamed by feeding them fish) is a good way to get an additional body for a Synchro play, and if you’re up against defensive walls such as Bohrok, this card also acts as a handy way for your low-Level monsters to overcome them. Its regular use in the Rahi deck doesn’t really involve this part all that much, but when it comes up, having a second copy in the Pendulum Zone is funny, as “even during the Damage Step” makes it so your Rahi banished for cost comes right back to get another attack in.

MKT Fish, Biting Rahi

Tuner Effect MonsterLevel 3 | DARK Fish | ATK 900 / DEF 300

If this card you control would be used as Synchro Material, you can treat it as a non-Tuner. During your opponent’s Main Phase, you can (Quick Effect): Immediately after this effect resolves, Synchro Summon 1 Synchro Monster, using only Fish, Sea Serpent, and/or Aqua monsters you control, including this card. You can only use this effect of “MKT Fish, Biting Rahi” once per turn.

Bionicle: Protodermic Evolution (v4.8.6)

Moving on to the next expansion, BPEV gives us just one new monster with the Makuta Fish (abbreviated to MKT to avoid unwanted archetype associations) – basically the Ruki’s larger cousin that only ever appeared in written form. If that sounds like it wouldn’t bring anything new to the table, you’re mistaken, because this Tuner is Level 3, and sometimes not a Tuner, and its disruption consists of a Quick-Synchro that unlocks a whole bunch of Extra Deck options (as we’ll see in the sample deck). It also happens to be one of the few DARK Rahi, but turns out that doesn’t matter much in this particular strategy. Perhaps one last thing for the list of weird traits would be that it’s a Rahi whose effect makes no reference to the Rahi archetype, so really it’s just here to be searchable by e.g. a Shore Turtle.

Rahi from the Depths

Trap

Target any number of “Rahi” monsters you control; all monsters your opponent currently controls lose ATK/DEF equal to the total ATK of those monsters you control (until the end of this turn), then you can destroy 1 monster your opponent controls with 0 ATK. You can banish this card from your GY; Special Summon 1 Fish, Sea Serpent, or Aqua “Rahi” monster from your GY or banishment, but its ATK/DEF become 0. You can only use 1 “Rahi from the Depths” effect per turn, and only once that turn.

Bionicle: Protodermic Evolution (v4.8.6)

The other piece of BPEV support is the archetype’s first Type-specific Trap Card, though its activation effect actually still works with all Rahi. Based on Gali’s encounter with the Great Temple Squid during the search for the Kanohi Nuva, the conceit of this card is that tentacles spring forth to restrain your opponent’s monsters, perhaps outright crushing weaker ones. That means it’s a non-targeting debuff with maybe destruction if the numbers line up right, which for most Rahi decks isn’t all that appealing in Trap form. But those Rahi that truly do hail from the Depths have the additional benefit of being able to use it for revival while it’s in the GY too, so it’s well worth playing with them at least.

Sample Deck

The main focus in-engine are the Ruki as our main frontline disruption, as well as the Shore Turtle and Takea that get us access to it. Makika and Keras get two slots each – while we’re generally okay with searching them, the fact that they can be Special Summoned from the hand makes them potentially useful in the opening hand as well. The Ghekula has no such advantage and is thus at a single copy, which also makes the ratios line up nicely at 4 low-scale and 4 high-scale Pendulum Monsters. We also run only 1 each of Light- and Makuta Fish , relying on Shore Turtle and Takea to get them as needed.

That leaves room in the Main Deck for “fun” cards such as the semi-recent roach reincarnation Mulcharmy Purulia (it’s Aqua!) and everyone’s favourite Dimension Shifter. While it wasn’t really my intent, this ended up being perhaps the world’s first Pendulum deck that thrives under Shifter due to the fact that all the Pendulums put themselves back into rotation even if they get banished. Even funnier: You can also play fairly well under Anti-Spell Fragrance (as I noticed in one game against the stun AI), because the scales don’t care about that restriction when they place themselves via their own effects!

The Terrortop package is in here as well, on the one hand for Hikaki access, and on the other because a hard-drawn Taketomborg can Special Summon itself if you have the WIND Shore Turtle on the field. That’s a Level 2 Rahi Tuner and a Level 3 non-Tuner, which adds up to a Waikiru and therefore a straight line into the rest of your Deck.

Otherwise, the Extra Deck space is mostly spent on Synchros that can be made from our various combinations of Levels 1 through 4. Herald of the Arc Light for convenient negation and banishing, Arionpos to get a scale from certain awkward positions, Black Rose (Moonlight) and Tarakava-Nui for removal and disruption (via Makuta Fish), White Aura Whale and Trishula for the same but with more stars, and our rarely seen big boss Mana Ko . There’s also a Rahi Nui in here (because Makuta Fish is DARK), but it doesn’t serve much of a purpose.

In general, a lot of the Extra Deck options here were just experimental and didn’t end up seeing use, so you could definitely cut some names and double or triple up on others – which is why Pot of Extravagance has a comfortable spot in the side deck. Along with some other generic good cards that may come in handy.

A sample video can be found below; the way it ends may surprise you …

Conclusion

The three Types Fish, Sea Serpent (eventually), and Aqua together form a Rahi deck that mostly forgoes combos and big boss monsters, instead trying to outgrind the opponent with a banishing resource loop that keeps disrupting them while keeping your own cards in play and moving. The general setup you aim for is to put your disruptive Tuners like Ruki and Makuta Fish on the field while backing them up with a pair of Pendulums that trigger various offensive or defensive bonus effects as you play. And whenever you do find Synchro access, you can use the material provided by something like a Pendulum Summon to go into powerful generic Synchro monsters or our very own Waikiru (for setup) or Mana Ko (for protection and pressure).