Release: Carvers of Po-Koro

As previously announced, here’s Po-Koro, freshly reworked!

Download for EDOPro

For a detailed introduction to the new cards, best check out the Theme Guide all about them. There, you can also find a sample decklist and Best of Test demo video, so really no reason to repeat any of that stuff here.

Aside from that, the one update of the release is C.C. Matoran Taipu, whose non-OPT ATK boosting effect was adjusted so it can only be used on monsters with less than 2000 ATK. While stats barely matter, the ability to make arbitrary monsters arbitrarily big if you can just repeatedly send this one card from field to GY seemed a bit abusable, so now it’s more limited to its intended purpose. But you can still cheat by using multiple in the same chain 😉

And finally, just one more thing:

A card I did not update, but identified as possibly needing changes, is C.C. Matoran Maku. What I noticed is that the Warrior type does not really have any hand traps with significant effects outside battle, which might be a legitimate Konami design rule due to how searchable Warriors are. Maku’s ability to protect a target from pretty much any one effect stands out as uncharacteristically useful in this light, so I might need to get rid of that ability.

However, I already have the whole lore mapping for making cards unaffected worked out and don’t really want to move away from the idea. So my solution would be to let Maku continue doing that, but from the field rather than the hand, and expanding her self-summoning effect to also work from the hand. That way, you can’t respond quite as immediately and the utility is a lot lower, but the basic concept stays intact.

I have not done anything to implement this yet because it would affect Ga-Koro as a whole enough to make at least a partial rerun of the test circuit necessary, but once I find a good time for that I might just try and see how this change works out. In the meantime, if anyone has a different opinion on this issue, I’d be very happy to hear it – not sure yet if the way I’ve interpreted things is actually the correct one.

Theme Guide: Po-Koro (BCOT)

Among the villages on Mata Nui, I’d say Po-Koro is pretty high up there in terms of memorable traits. There’s the sculptures made by the resident carvers, the busy trading going on at the bazaar, the entire sport of Koli, and of course that little plague it suffered under in MNOG. For my particular depiction of the Village of Stone, I chose to focus on the first two of these: Trading and carving. (Koli is something I plan to study in more detail when it transforms into Kolhii later down the line, since it gets much more focus in the story then, and the plague is a topic for BCOR.)

Let’s begin dissecting from the second effect, since that will usually be the first you use. This one represents carving, and what it does is, like most Koro stuff, mainly inspired by the corresponding MNOG2 principle. In Po-Koro’s case, that means “Creation”. My first association with this in game terms has alway been the various Extra Deck summons (literally putting your monsters together to CREATE a new one), but upon further reflection I realized that there is one mechanic that creates stuff more literally than any other, and that is Tokens – those straight up don’t exist in any form until an effect says they do. So by combining those two ideas, I ended up with an effect that summons Tokens whenever you Special Summon from the Extra Deck.

“But isn’t that basically just Linkross for every summoning method?”, you might ask, and you wouldn’t be exactly wrong. However, there are some extra hoops to jump through here that hopefully fix the glaring balance issues with the concept. Most trivially, this card is in the Main and not the Extra Deck, so it’s already less consistently accessible by default. Then there are also two points that prevent using it too generically: You need to banish an EARTH Warrior (the “sculptor”) from the GY as cost, and you only get Tokens (the “sculptures”) up to the number of EARTH materials (the “raw materials”) in the summon. Note especially the banishing, which is meant to directly discourage mixing the Po-Koro strategy with Onu-Koro (where the resource loop relies on not getting your monsters banished). They both revolve around the EARTH attribute since Stone doesn’t exist separately in Yugioh, so I made sure to strongly distinguish them by playstyles instead. The final restriction meant to prevent Linkross-tier combos even in those decks that can make Po-Koro work is that whichever summoning method you use to trigger it becomes entirely locked for the rest of the turn (as opposed to just restricting how the Tokens are used). So the moment you make your Tokens, you need to be ready to pivot to something else. In MNOG2 terms, this sensitive issue of timing matches up quite well to the Kolhii skill of Strategy that is derived from Creation. I was quite cautious making this effect since it’s so close to a recently banned card, and initially it was even more restricted, but test runs suggest the current level of power should be fine without causing any notable problems. As usual, feel free to prove me wrong.

The secondary effect (which is listed first because that seems to be the convention for continuous vs activated effects) allows you to save your monsters from destruction by “trading” fancy Rocks, as they do on the Po-Koro bazaar. This is possibly not the best trade since you have to go as far as banishing a monster to protect another, but the Tokens made by the other effect are conveniently Rocks and in their case banishing is no different from destroying, so the idea is to mainly use those. One pesky detail I only noticed after implementing the effect is that it does not protect from full boardwipes because you can’t banish a card already marked for destruction as replacement, but it’s still fairly handy regardless.

If you compare to the other Koro field spells, you might notice that this one is much less xenophobic: You need to play EARTH monsters, including at least one EARTH Warrior, to make it work, but it doesn’t punish you for playing anything else. This is because, in the name of creation and creativity, I wanted to leave it possible to put whatever you want into the Extra Deck, as long as you’re using at least two different summoning methods.

Those were some long-ass design notes, but to summarize and boil the strategy down to its essence: The idea of a Po-Koro deck is simply to spam as much as possible from the Extra Deck, building a board while combining at least two different summoning methods, and any Tokens left at the end of that can act as additional protection.

As usual, the village itself is only part of the equation here, so on to the rest. For example, what could you summon from the Extra Deck to make especially good use of Po-Koro’s effect?

Turaga Onewa is meant to be one answer to this question. On having an EARTH monster summoned next to his arrow, he will immediately bring back a banished EARTH Warrior, which transforms the cost to summon Tokens into one more monster on the field. Of course, the summoning restriction means you can’t use all this field presence to just continue Link Summoning, so you’ll need to make sure you have a Tuner or something to really benefit here. One thing I considered doing for a bit was letting Onewa turn the monster he brings back into a Tuner, but what bothered me there was that it would potentially allow you to just use the same Gouki-based deck I had for Onu-Koro and still reliably fulfill the requirement of two Extra Deck summoning methods. Kind of runs counter to the separation I’m trying to achieve, although it would technically be a distinct strategy even if it uses the same cards as its vehicle.

Since you can’t always expect to draw Po-Koro and do the setup that way, Onewa’s first effect provides another way to banish stuff, and comes with a lore gimmick to its math representing his famous ability to resolve disputes fairly. On top of the perfectly neutral action of putting a monster from the GY back into the hand and banishing a card from the hand, it gives a draw to only the player who is currently behind in advantage, so it works out to +1 if that’s you and -1 if it’s your opponent (and neutral in every other case). Fair.

The Kanohi Komau has mind control as its power, and with the original version back in 2014, I was quick to make the obvious association and write an effect that takes control of an opponent’s monster. In hindsight, that’s a bit above the intended powerlevel of Noble Kanohi, so the redesign instead turns it into a passive effect of using mind control to “stun” the weakest enemy (in terms of ATK, because unfortunately there isn’t a willpower stat that could be used for perfect accuracy). This fits well with the Huna and Rau as an effect that just inconveniences the opponent a bit and forces them to play around it, and for Po-Koro’s particular strategy of building a board with Extra Deck monsters, it makes a reasonable addition to the usual negates and disruptions you want to set up. Tributing a Sculpture Token to revive Onewa together with the Komau is something that happened semi-frequently during testing.

One noteworthy aspect of the way Onewa brings back banished monsters is that they are free to use their effects, so we can gain further advantage by using targets with beneficial effects on Special Summon. This is the niche our first Po-Matoran plays into.

Both of Hafu’s effects are essentially retained from his original incarnation, with a bit of adjustment. Being the master carver, he’s fully meant to facilitate more Extra Deck summoning and brings back another Level 2 Warrior (could be another Matoran, or a generic Tuner like Junk Anchor to enable Synchros) when Special Summoned. His other ability is crafting “Hafu originals” in his own likeness, meaning whatever uses him as material inherits his name. This mainly has applications in a dedicated “C.C. Matoran” strategy, where members of the archetype get a range of neat benefits. Here, it’s really just a cute gimmick that barely comes up.

I did consider a few additional tweaks for the Special Summon effect during testing, such as making it trigger on Normal Summon as well or expanding its target range to Level 4 or lower Warriors, but since the deck I ended up building seems to be able to utilize him just fine as is, it appears no such buffs are necessary.

If you’re familiar with the structure of these Koro strategies, you already know that the last piece of the puzzle is the village’s Toa, but in the case of such an Extra Deck focused theme, a Main Deck boss is a bit of an odd fit. Still, I feel like I managed to give him an effect that provides a fair level of utility.

What Pohatu brings to the table is Spell/Trap removal, and to match Po-Koro, he does it whenever monsters are Special Summoned from the Extra Deck. Furthermore, since we don’t want him to be useless after you have already built your board, he has a secondary trigger off the effect activations of Extra Deck monsters. Do note, however, that this is a trigger effect and not a quick effect, meaning it will activate on a separate chain only after the triggering effect has resolved.

The mental image behind this S/T destruction is destroying stuff by kicking a rock at it, and so it’s fitting to have a bonus effect if you actually happen to have a Rock monster (e.g. a Sculpture Token or a Suva). I went with the ricochet idea here, which means you get an additional (non-targeting) S/T destruction in that case. Seeing how the law of creative heroic thinking permits using the environment to harm enemies indirectly, letting the second destruction affect monsters as well may be a viable option, though in that case it would probably be fair to also destroy your Rock monster as a downside.

Finally, the Kanohi Kakama, Great Mask of Speed, lets the equipped monster move fast enough to attack everything in a single Battle Phase, essentially letting you use Pohatu to clear out all the monsters after using his effect to clear up to 2 backrow. This is a scenario that occured exactly 0 times during the test circuit, but hey, theoretically it sounds useful.

Sample Deck

I couldn’t think of any existing EARTH Warrior archetype that focuses mainly on Extra Deck spam while also adhering to the rule of using 2+ summoning methods, so I had to get a bit more creative than usual to fill the holes left by the not yet created Po-Matoran. Therefore, I’m including a section to explain the deck I built to test Po-Koro this time. As with everything else, feedback and criticism on this part is absolutely welcome.

The route I took to fulfill the 2 summoning method requirement was Link + Synchro, since they’re much easier to pull off than Fusion and immediately put banishable monsters into the GY unlike Xyz. In order to get access to the necessary Tuners, I picked Junk monsters as the EARTH Warrior core: Forward as a free Special Summon to start making Onewa, Anchor as a Tuner that also happens to be a Level 2 Warrior for Hafu, Converter as another Level 2 Warrior who does both searching and setup for Synchron (who is unfortunately not EARTH, but still good), and Servant as a free Special Summon whenever I have any of the others out. For the actual Matoran, we have just one Hafu (he only triggers on Special Summon, so having him in the hand isn’t the greatest) and three Taipu because free Special Summon going first. The latter isn’t a Po-Matoran, but since the Chronicler’s Company are meant to work together, I figured there was no way to avoid synergy through the shared attribute in this case. Thanks to Taipu’s presence, Hafu’s name change actually matters occasionally, by still letting you attack with some of your monsters from the Extra Deck after you summoned Taipu. The remaining EARTH Warriors are one Super Agent as an unreliable Special Summon and potential Spell/Trap remover, and Pohatu as your main Spell/Trap remover, Kakama search target, and Suva enabler.

The second major group of monsters, providing a fitting distinction between Earth and Stone, are Rocks. We have Adamancipator Researcher as a Tuner whose Special Summon from the hand is enabled by Po-Koro’s Tokens, Nemeses Keystone as another Special Summon that can trigger Onewa while recycling other banished stuff and to banish for Po-Koro’s protection so it comes back to hand at the end of the turn, and Nibiru to initiate extinction events. The Suva is also technically a Rock, and its purpose is of course being Tributed for Pohatu and then coming back every turn, which can actually trigger Onewa if you have Po-Koro up because the Suva counts as all non-DARK Attributes in that case.

The Spells can be quickly summarized as Kanohi, searchers, and ways to Special Summon to Onewa’s zone (most interestingly Word Legacy Succession, which does exactly that). And of course, we have the Dragoon package I put in to celebrate the complete freedom of Extra Deck choices and then proceeded to regret immensely because it’s so powerful and easy to make that it ends up distracting from the actual point of the Deck. Which is why I ended up intentionally siding it out for the rest of the match every time I won a duel during testing, even when I didn’t actually use it.

The Extra Deck could probably be filled a million different ways, but what I settled on after trying a lot of variations is:

  • Double Onewa to get free monsters.
  • Isolde to trigger the Kakama’s search and to get Hafu or Junk Anchor (either as followup to Onewa or as an alternative if you don’t have the setup to trigger him).
  • Halquifibrax because it has just as much synergy with Po-Koro as it did with Linkross.
  • Desert Locusts to summon via Halq for a discard while potentially triggering Onewa.
  • Linkuriboh because it can be made with a single Sculpture Token.
  • Avramax as a big dude you can make e.g. with Onewa and Isolde.
  • Herald of the Arc Light as an easy banishing floodgate and negate.
  • Jiujiu as an indestructible removal tool.
  • Marcher and Integrator so you can get to Jiujiu from Researcher and two Sculpture Tokens while drawing in the process.
  • Dragite as a negate and removal tool.
  • Quandax to make Dragite while getting a WATER into the GY so the negate is turned on.
  • Verte Anaconda plus Dragoon in case you mess up the actual combo but feel like winning anyway.

Finally, the side deck is just a pile of EARTH staples and cards that are really good in some situations, plus a few options to fill the Extra Deck slots left open when removing the Dragoon stuff (Accesscode and Apollousa as alternate bosses, Reprodocus and Geonator Transverser as alternate Links you can make with random monsters).

To see all this in action, continue right on.

Best of Test

Best of Test: Po-Koro


Po-Koro decks encourage Special Summoning from the Extra Deck and excel at providing a bunch of material to do so. However, lacking dedicated boss monsters of its own and having some tricky requirements and restrictions on the Field Spell, the success of the strategy is very much dependent on what other cards you combine it with, perhaps more so than any of the other villages. Also, the need to have cards to both make Onewa in the Extra Monster Zone and trigger him with an additional Special Summon can be quite the hurdle to consistency.