Oh golly, finally a post that talks about something else than Rahi and …
nah, tricked you, still a Rahi post. But only one more to go after this, so we have in fact reached peak penultimacy. I’m not sure that’s a word, but at the very least it’s a combination of letters that has been typed before.
See also:
- The Rahi Spreadsheet – The data all of this is based on
- The Shapes and Sizes of Rahi – Overview of all Rahi groupings
Concept
Certain Rahi appear not only in the wild, but also fill significant roles within Matoran society, particularly its more rural incarnation on the island of Mata Nui. Whether they are used as beasts of burden, kept as pets, or handle more specific tasks, that is a relationship that would be nice to reflect in card design.
To some extent, this has already been done from the Matoran side:
![](https://bye-project.xyz/wp-content/uploads/cards/3.20.4/bcor/en/10100147.png)
Matoran Racer Onepu
Effect MonsterLevel 2 | EARTH Warrior | ATK 700 / DEF 500When this card is Normal Summoned: You can target 1 of your banished EARTH monsters; place it on the bottom of the Deck, then you can reveal any number of “Matoran” monsters in your hand, and if you do, gain 500 LP for each. During your Main Phase: You can Special Summon 1 Level 4 or lower Beast “Rahi” monster from your hand or GY, but banish it when it leaves the field. You can only use each effect of “Matoran Racer Onepu” once per turn.
![](https://bye-project.xyz/wp-content/uploads/cards/3.20.4/bcor/en/10100150.png)
Matoran Pilot Kongu
Effect MonsterLevel 2 | WIND Warrior | ATK 800 / DEF 400If this card is Normal or Special Summoned: You can send 1 Winged Beast “Rahi” monster from your hand or Deck to the GY, and if you do, this card can attack your opponent directly this turn. You can only use this effect of “Matoran Pilot Kongu” once per turn. When this card inflicts battle damage to your opponent: You can banish 1 WIND monster from your GY, then target 1 face-up monster your opponent controls with DEF less than or equal to that banished monster’s ATK; destroy it.
These two individuals whose occupations both involve riding certain types of Rahi interact with just that in-game Type, providing a point of synergy that justifies mixing a Rahi or two into an appropriate Koro deck. In the other direction, the interaction is a bit less targeted and stems mainly from that small group of Rahi that provide a generic revival effect for their respective Attributes – as we will see in a moment.
To summarize the question at hand: What is the best way to encode these connections between Matoran and Rahi into designs going forward?
Implemented
For four of the six Attributes, we already have one Rahi each that helps out by bringing back other matching monsters from the GY. Most prominent in this group are the EARTH and WIND ones that are already involved in combos with the Matoran shown above.
![](https://bye-project.xyz/wp-content/uploads/cards/3.15.5/bcor/en/10100130.png)
Ussal, Crab Rahi
Pendulum Effect MonsterLevel 3 | Scale 2/2 | EARTH Beast | ATK 1000 / DEF 1000Pendulum Scale = 2
[ Pendulum Effect ]
Once per turn: You can reduce the Pendulum Scale of the card in your other Pendulum Zone by 1 until the End Phase; this turn, while this card is in your Pendulum Zone, you can also Pendulum Summon “Rahi” Pendulum Monsters from your GY, but monsters Summoned this way are destroyed during the End Phase.
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[ Monster Effect ]
If this card is sent to the GY: You can Special Summon 1 Level 4 or lower EARTH monster from your GY, except this card. If this card is banished: You can Special Summon 1 Level 3 or lower “Rahi” monster from your GY. You can only use 1 “Ussal, Crab Rahi” effect per turn, and only once that turn.
The Ussal is a crab that sees widespread use among Matoran for … more or less anything you might use a horse for in our world. Transporting passengers or cargo, riding into battle, racing for sport, and all that stuff. Their chief employers are the Onu-Matoran and, on Metru-Nui, also the Le-Matoran. Between being strictly ground-based creatures and their special skill of helping with tunnel-digging, it’s clear EARTH is the most reasonable Attribute to support.
The other effects are specific to Rahi, so a Matoran deck won’t derive any benefit from them (though they do theoretically work with additional copies of the card). This isn’t necessarily a problem, since the synergy already functions fine when built around the single generic effect, but we will have to reconsider the in-archetype interactions in light of the shift to Type-based substrategies. Perhaps in that process, we could take some care to give the Rahi in this little category abilities that, to some extent, still apply in a non-Rahi deck – like recycling themselves, for example.
![](https://bye-project.xyz/wp-content/uploads/cards/3.15.5/bcor/en/10100152.png)
Kewa, Vulture Rahi
Pendulum Effect MonsterLevel 3 | Scale 2/2 | WIND Winged Beast | ATK 1400 / DEF 400Pendulum Scale = 2
[ Pendulum Effect ]
If you control no other cards: You can add 1 WIND monster from your Deck to your hand, except “Kewa, Vulture Rahi”, and if you do, destroy this card during the End Phase. You can only use this effect of “Kewa, Vulture Rahi” once per turn.
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[ Monster Effect ]
If this card is sent to the GY: You can Special Summon 1 Level 4 or lower WIND monster from your GY, except this card. If this card is banished: You can add 1 “Rahi” card from your GY to your hand. You can only use 1 “Kewa, Vulture Rahi” effect per turn, and only once that turn.
The Gukko and its subspecies, including the Kewa, are the aerial steeds used in Le-Koro, and thus a close counterpart to the Ussal. It only makes sense then, to make it the WIND representative of the same category, and indeed much of what we said for the crab also applies to the vulture. The Pendulum Effect on this one is actually extremely useful in generic WIND decks, being able to search basically anything as long as you use it on an empty field, but it also definitely isn’t surviving a redesign, so eh.
![](https://bye-project.xyz/wp-content/uploads/cards/3.15.5/bcor/en/10100156.png)
Daikau, Floral Rahi
Pendulum Effect MonsterLevel 3 | Scale 2/2 | WATER Plant | ATK 1500 / DEF 300Pendulum Scale = 2
[ Pendulum Effect ]
You can send 1 “Rahi” Pendulum Monster from your Deck to the GY; all monsters your opponent currently controls lose ATK equal to that monster’s ATK, until the end of this turn. You can only use this effect of “Daikau, Floral Rahi” once per turn.
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[ Monster Effect ]
If this card is sent to the GY: You can Special Summon 1 Level 4 or lower WATER monster from your GY, except this card. If this card is banished: You can discard 1 “Rahi” card, then target 1 monster with 2000 or less ATK on the field; destroy it. You can only use 1 “Daikau, Floral Rahi” effect per turn, and only once that turn.
![](https://bye-project.xyz/wp-content/uploads/cards/3.15.5/bbts/en/10100235.png)
Infernavika, Lava Bird Rahi
Pendulum Effect MonsterLevel 3 | Scale 2/2 | FIRE Winged Beast | ATK 1100 / DEF 800Pendulum Scale = 2
[ Pendulum Effect ]
Once per turn, at the start of the Battle Phase: You can target 1 face-up monster you control; this turn, when that target battles an opponent’s monster, destroy both monsters at the start of the Damage Step, except FIRE monsters.
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[ Monster Effect ]
If this card is sent to the GY: You can Special Summon 1 Level 4 or lower FIRE monster from your GY, except this card. If this card is banished: You can banish the top card of your Deck; add this card to your Extra Deck face-up. You can only use 1 “Infernavika, Lava Bird Rahi” effect per turn, and only once that turn.
Now the WATER and FIRE members don’t get more than a footnote in this article, because neither the Daikau nor the Infernavika are in any way utilized by Matoran (and the former technically isn’t even a Rahi). I just gave them these effects to round out the quartet as an afterthought, and they’re probably not keeping them.
Of course, this does raise the question of who should instead fill the niche for these Attributes – would be unfair for only half the villages to have Rahi support, after all. Ta-Koro is a bit out of luck here, since it seems like the only real candidates are an elemental recolor of Po-Koro’s Mahi and an unnamed six-legged fox … not exactly the most worthwhile things to turn into cards.
We do, however, have one more legitimate option for Ga-Koro.
![](https://bye-project.xyz/wp-content/uploads/cards/3.15.5/bbts/en/10100241.png)
Keras, Crab Rahi
Pendulum Effect MonsterLevel 3 | Scale 2/2 | WATER Aqua | ATK 1400 / DEF 500Pendulum Scale = 2
[ Pendulum Effect ]
At the start of the Damage Step, if a monster you control with 1000 or less ATK battles an opponent’s monster: You can destroy this card, and if you do, that monster you control gains 1400 ATK until the end of this turn. You can only use this effect of “Keras, Crab Rahi” once per turn.
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[ Monster Effect ]
If this card is sent to the GY: You can target 1 Level 4 or lower monster on the field; that target is unaffected by Spell/Trap effects until the end of this turn. If this card is banished: You can target 1 Set card on the field; destroy it. You can only use 1 “Keras, Crab Rahi” effect per turn, and only once that turn.
The Keras are a more aquatic kind of crab that served as special steeds to the Ga-Matoran when they were fighting off the Bohrok swarms. This is reflected by their effects that actually all work generically to either support those with low ATK and/or Levels (Hint: that includes Matoran), or fight against face-down cards (Hint: Bohrok are Flip Monsters). That’s kind of a step up in terms of splashable design compared to what we saw so far, but given the clear parallels to Ussal and Kewa, replacing some part of these abilities with the WATER revive currently held by the Daikau is under serious consideration.
Now, moving on to Rahi that have been implemented, but failed to receive any mechanics reflecting their canon domestication. There’s a surprising amount of these.
![](https://bye-project.xyz/wp-content/uploads/cards/3.15.5/bcor/en/10100133.png)
Mahi, Goat Rahi
Pendulum Effect MonsterLevel 3 | Scale 2/2 | EARTH Beast | ATK 700 / DEF 1500Pendulum Scale = 2
[ Pendulum Effect ]
(Quick Effect): You can send 1 face-up “Rahi” Pendulum Monster from your Extra Deck to the GY, then destroy this card. You can only use this effect of “Mahi, Goat Rahi” once per turn.
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[ Monster Effect ]
If this card is sent to the GY: You can add 1 Level 3 or lower “Rahi” monster from your Deck to your hand. If this card is banished: You can add 1 of your banished Level 3 or lower “Rahi” monsters that was not banished this turn to your hand. You can only use 1 “Mahi, Goat Rahi” effect per turn, and only once that turn.
Mahi are iconic for the herds of them that can be seen (and heard) in MNOG’s Po-Koro, but their usefulness as livestock has only been adapted here in the sense that they provide a lot of helpful utility effects to the Rahi archetype. One idea I have for an overhaul is to have an effect that not only provides a bit of generic utility, but also resembles some part of what Po-Koro does – the destruction replacement effect, for example, was specifically based off the Mahi trading happening in the village!
![](https://bye-project.xyz/wp-content/uploads/cards/3.15.5/bcor/en/10100123.png)
Husi, Ostrich Rahi
Pendulum Effect MonsterLevel 4 | Scale 5/5 | EARTH Winged Beast | ATK 1700 / DEF 1100Pendulum Scale = 5
[ Pendulum Effect ]
If a card in your Pendulum Zone is destroyed: You can Special Summon 1 face-up Level 4 or lower “Rahi” Pendulum Monster from your Extra Deck. You can only use this effect of “Husi, Ostrich Rahi” once per turn. If you control no monsters: You can Special Summon this card from your Pendulum Zone.
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[ Monster Effect ]
A Synchro Monster that was Summoned using this card as Synchro Material gains this effect.
●If this card is destroyed by a card effect and sent to the GY: Target 1 “Rahi” monster in your GY with a lower Level than this card; Special Summon it.
The Husi plays a similar role as livestock slash trade item, and in this case the effect it gives to a Synchro Monster is based on the idea of “trading”. But again, nothing here in any way works outside the Rahi archetype, so adjustments will have to be made if we want Matoran synergy.
![](https://bye-project.xyz/wp-content/uploads/cards/3.15.5/bbts/en/10100239.png)
Hapaka, Shepherd Rahi
Pendulum Effect MonsterLevel 3 | Scale 2/2 | WATER Beast | ATK 1200 / DEF 1400Pendulum Scale = 2
[ Pendulum Effect ]
“Rahi” monsters you control gain 700 DEF. If a “Rahi” monster(s) you control would be destroyed, you can destroy this card instead.
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[ Monster Effect ]
If you do not control “Hapaka, Shepherd Rahi”, you can Special Summon this card (from your hand or GY) by changing 1 Level 4 or lower “Rahi” monster you control to Defense Position. If Summoned this way, banish this card when it leaves the field. If this card is banished: You can return 1 of your banished “Rahi” monsters to your GY, except “Hapaka, Shepherd Rahi”. You can only use this effect of “Hapaka, Shepherd Rahi” once per turn.
For the protection of their Mahi herds and Husi flocks, the Po-Matoran employed Hapaka. Accordingly, the effects on this one are themed around protecting other Rahi (or in case of the banish one, “returning them to the herd”), but again locked into the archetype specifically. Adjusting it for use with Matoran is going to be a bit awkward because the color scheme and their habitat in the mountains suggest to me that it’s an Ice Rahi, thus WATER … but it’s mainly used in Po-Koro, which wants EARTH. A though nut.
Since these three are so explicitly connected and all belong to the Beast/Beast-Warrior/Winged Beast typings, I could actually see them primarily acting as a small synergistic group within that strategy. Then maybe helping out Matoran could be kept to a largely symbolic level, with effects that can technically work in a Po-Koro deck, but don’t necessarily have to be so good you actually would use them.
![](https://bye-project.xyz/wp-content/uploads/cards/3.15.5/bcor/en/10100114.png)
Dikapi, Ostrich Rahi
Synchro Tuner Effect MonsterLevel 5 | EARTH Winged Beast | ATK 1000 / DEF 16501 “Rahi” Tuner + 1+ non-Tuner monsters
When this card is Synchro Summoned: You can choose a number from 1 to 4; reduce this card’s Level by that number, then take damage equal to that number x 300. When using this Synchro Summoned card as a Synchro Material, you can use 1 face-up “Rahi” Pendulum Monster in your Extra Deck (and no other monsters) as the other Synchro Material.
On a less prominent note (in fact I wasn’t aware of this previously), the Dikapi apparently were also tamed by Po-Matoran, but as mounts for scouts and messengers rather than for trading. As the resident Synchro Tuner, this is a key piece in the Beast & co Synchro climb strategy, so I’m having a hard time imagining it redesigned in a way that also works with decks using Matoran. But maybe there is a chance if the materials are adjusted to make it feasible? Po-Koro does also want to spam stuff from the Extra Deck, after all. Side note, since the Dikapi’s big selling point is endurancem, and strong grind game is all the hotness in Yugioh these days, it would be nice if it did something related to that.
![](https://bye-project.xyz/wp-content/uploads/cards/3.15.5/bcor/en/10100135.png)
Moa, Bird Rahi
Pendulum Effect MonsterLevel 3 | Scale 2/2 | WIND Winged Beast | ATK 1300 / DEF 600Pendulum Scale = 2
[ Pendulum Effect ]
You can banish 1 “Rahi” Pendulum Monster from your Deck; this card’s Pendulum Scale becomes the same as that monster’s, and if it does, destroy this card during the End Phase. You can only use this effect of “Moa, Bird Rahi” once per turn.
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[ Monster Effect ]
If this card is sent to the GY: You can shuffle 1 of your banished “Rahi” cards into the deck. If this card is banished: You can Special Summon 1 Level 3 or lower “Rahi” monster from your hand. You can only use 1 “Moa, Bird Rahi” effect per turn, and only once that turn.
To continue and complete the theme that Po-Matoran will tame anything, the Moa also appeared domesticated in the one game that included it. But that was only one individual Rahi, so honestly it’s probably better to just ignore that unless we happen to figure out a really subtle way to include it.
![](https://bye-project.xyz/wp-content/uploads/cards/3.15.5/bcor/en/10100112.png)
Gukko-Kahu, Hawk Rahi
Synchro Effect MonsterLevel 6 | WIND Winged Beast | ATK 2500 / DEF 10001 “Rahi” Tuner + 1+ non-Tuner monsters
If this card is Synchro Summoned: Draw 1 card. If this card is sent from the field to the GY: Add 1 “Rahi” monster from your Deck to your hand. You can only use each effect of “Gukko-Kahu, Hawk Rahi” once per turn.
What we can’t ignore is the Gukko-Kahu, the larger of the birds ridden by Le-Koro’s aerial cavalry. This is another case where the domestication was translated into effects with broad utility, but in this case one of them is a simple draw, so that’s even generic. Once again, an adjustment of materials might be all it takes to make this justifiable in a Le-Koro deck. Those aren’t explicitly about Synchro Summoning, but with Makani in there, they certainly can.
Potential Members
Now on to those candidates that have not yet received cards. This could be because we haven’t reached their part of the story yet, or because they were just deemed too irrelevant.
By that latter category, I really just mean the Lightfish, the shiny little things you see floating in Ga-Koro’s lamps in MNOG backgrounds. If implemented, they would go into the Fish/Aqua/Sea Serpent strategy that centers on effect-based removal and disruption, while also helping the Ga-Matoran playstyle that wants as many quick effects as possible. That does sound like a winning combination at first, but then things stop aligning when you consider the Attribute – wouldn’t this one have to be LIGHT going by the name? When Ga-Koro has one of the most xenophobic Attribute limitations of all the villages? I guess you could work around it a bit if it was able to banish itself from the GY as cost for a quick effect, but still, doesn’t sound too optimal. And just making it WATER feels so boring.
Anyway, I think that does it for the Rahi species that were domesticated on the island of Mata Nui. It’s worth mentioning that the Mask of Light movie prominently figures a specific Ussal and Gukko that are both going to get their own cards in the next expansion, but I already have a fairly solid plan in place to make those work primarily in the Mask of Light deck while having some secondary utility for Rahi decks.
The years of 2004 and beyond, of course, introduced some more Rahi kept by Matoran. With the wolf-like Kavinika, taming them and using them as guard dogs ended in failure, so maybe giving them outside synergy isn’t even the right move. But I think it would be funny if I manage to figure out a technically generic effect that looks enticing to include in Ga-Metru decks, but ends up not working in practice due to debilitating drawbacks that bite you in the ass. Not exactly an easy balancing task, though.
Razor Whales, gentle giants of the sea, can also be tamed and ridden by Matoran once their tail spines fall off in old age. This gives us the interesting case of a Rahi that joins the domesticated group with a delay, which is mechanically problematic in a speed freak game like this one. Perhaps it could work in a way where it has one effect representing its young self, and using that one immediately enables a second one that has it acting as a mount. And like many large Rahi, there’s a good chance this would be a Synchro, so this is another case where we might want it to be generic for use with Matoran.
The Kikanalo is a bit of a questionable inclusion, since they aren’t exactly kept by Matoran. Rather, they’re accidentally beneficial due to the Protodermis they dig up – which is also appreciated by other Rahi like Catapult Scorpions. It stands to reason that this trait may translate into some (semi-)generic way to generate (excavate?) resources, but I don’t think it needs to be tuned to the point where you’d actually use it in a Po-Metru deck or anything like that. There’s also the matter of Toa Lhikan riding a Kikanalo in his set representation, but that never comes up in the lore and is also sufficiently explained by Lhikan being just that badass, so I don’t think it needs to be addressed from the Rahi side.
Moving on to Voya Nui, there isn’t really much worth mentioning – even the native Rock Ussal were never seen domesticated, probably because they’re a more aggressive breed.
But even in this kind of hostile ecosystem, the Le-Matoran Piruk specifically still managed to have a pet, namely a tame Burnak. Since this is such a minor one-time thing in side media, much like Lhikan’s Kikanalo, it should be sufficient to maybe include some unassuming piece of synergy with whatever Piruk ends up doing.
And as the last hurrah of Rahi getting along with Matoran, we dive into the waters of Mahri Nui and find Hydruka at work in the air fields. In a first since Mata Nui, we’re looking at a Rahi that appeared primarily in a domesticated state, so that definitely should be a significant part of the effect design. They harvest the air bubbles that are essential to the survival of the underwater Matoran, which makes me think their role should be to provide whatever in-game resource will end up representing that. Of course, this being 2007 story material that won’t be implemented for ages, the details are still fuzzy at best.
Finally, we do also have two more cases of specific individuals being tamed, rather than a species as a whole.
One is the Energy Hound Spinax, guard dog of The Pit. While their looks and abilities indicate they might very well be serving similar roles in a lot of other places, we only ever see one of them. Since their skill at tracking was always going to be the primary guide for their design anyway, domestication status probably doesn’t even make a difference here. Throwing in a pit (this was a typo but I’m leaving it) of synergy with all the other stuff surrounding The Pit only makes sense, of course.
The other, as I am just realizing, may actually be a throwback to the Ussal and to Pewku in particular, since we’re talking about a Hahnah crab kept by Jaller.
While it didn’t do much other than act as a Cordak mount, I could see it belonging less with other Rahi and more with the Toa Mahri archetype as a “team pet” of sorts. The affinity for heat also suggests FIRE synergy, so you really don’t have to look hard to find generic usage for this one.
Conclusion
Rahi domestication was primarily a focus during the Mata Nui years, so a large part of the cards to consider here have already been implemented. However, since only a select few of them actually incorporate synergy with Matoran, this is going to be a major point to consider in upcoming redesigns. So far, the main direction has been support based on the Attribute, which I intend to keep at least for the Ussal and Kewa, since those already work pretty well with their Matoran handlers. The Keras may also join this group, but at the same time its present incarnation shows a different approach of having the card generically help with the task for which it was tamed.
When it comes to the remaining Rahi, it would of course be nice to have a proper FIRE member so every village gets a helping Rahi, but it’s a bit unfortunate that the first real opportunity for that is the Hahnah all the way in 2007. Others can be categorized either as being domesticated at large scale for a given purpose, or as wild creatures that beneficially interact with the Matoran population in some spots, or as pets that belonged to certain individuals. I believe the Keras model of just doing something generically helpful and thematically appropriate should work fine for the first two types, while the final one is easily handled by synergizing specifically with the pet’s owner.
An interesting thought that cropped up along the way is that large Rahi like the Kahu or the Razor Whale, which are generally expected to be Synchro Monsters, could be made accessible to Matoran and others by simply making their materials fully generic. This potentially simplifies effect design compared to main deck cards, since you can then incorporate them in a combo without needing to justify running a non-archetypal brick.
Finally, I want to make sure that these Rahi, while capable of helping Koro and other non-Rahi decks, do also still have a spot in their native Rahi strategies. After all, a big reason to split those up by Type was always that it simplifies design of anything added to the archetype later, and that’s especially useful when you have the extra challenge of also making it work outside the archetype.
It also helps, as I’m just noticing, that all the Rahi covered here come from only two Type groups: Beast/Beast-Warrior/Winged Beast and Fish/Aqua/Sea Serpent. No Reptiles or Insects to be found, and nothing exotic either if we (rightfully) ignore the Daikau. In other words: We now know everything except those two groups is free to throw around archetype locks and such without having to worry about ruining some lore-friendly hybrid in the distant future!