Koa'ki Meiru: deck recipe [Post-Banlist]

The “Koa'ki Meiru” archetype revolves around Iron Core of Koa'ki Meiru; the vast majority of the monsters self-destruct during the End Phase unless you send this Spell Card to the Graveyard or reveal a certain type of card from your hand.

• There are a lot of “Koa'ki Meiru” cards, so, naturally, there are also a lot of different decks that you can make with them, but the one that has seemingly been the most successful so far is this one.

As I said in the Overview, the “Koa'ki Meiru” archetype revolves around a card in particular: Iron Core of Koa'ki Meiru. Iron Core can be recycled from the Graveyard via its effect, so, even if a monster requires you to discard it, you are not going to run out of them, but the case is different with Koa'ki Meiru Maximus because this Level 8 monster can only be Special Summoned by banishing the Spell Card.

If Iron Core is banished, there aren’t many ways to retrieve it consistently. In addition to requiring you to banish Iron Core in order to be Summoned, Maximus doesn’t just ask you to reveal a card during the End Phase: you will have to discard a copy of Iron Core or a “Koa'ki Meiru” monster, otherwise it will destroy itself during the End Phase.

This deck is built to make explosive, aggressive plays, so it generally doesn’t care about maintaining this monster, but, thanks to Diamond Core, you don’t necessarily have to discard anything during the End Phase.

Once per turn, Koa'ki Meiru Maximus allows you to destroy a card your opponent controls. You can destroy a Set Spell/Trap Card or a monster and, if you have more than one Maximus on the field, you can use this effect with both of them.

Maximus alone isn’t enough to deal with everything your opponent has on the field and, even though it does have a lot of ATK, it’s not going to be enough for an OTK.

Once per turn, Koa'ki Meiru Urnight can Special Summon a Level 4 or lower “Koa'ki Meiru” monster from your Deck, except another Koa'ki Meiru Urnight, if you reveal an Iron Core from your hand.

Use Koa'ki Meiru Urnight’s effect to Special Summon Sandman and then Special Summon Koa'ki Meiru Maximus. Now you have a board full of monsters, Maximus’ destruction effect and Sandman’s negation for a Trap Card.

If not Sandman, you can choose to bring out Wall to prevent cards like Book of Moon from stopping your Maximus.

This also stops your opponent from using Mystical Space Typhoon on your set cards if you want to set Book of Moon or any traps you might want to play.

Ice is more of a turn 2 or higher card. Since most strong monsters are most likely special summoned monsters, Ice will most likely be able to deal with a lot of boss monsters.

Unfortunately, this effect does indeed target, despite not being written that way. The good thing is that this can even still destroy face-down special summoned monsters, allowing you to destroy your opponent's monster that you Book of Moon'ed without having to attack.

Star Seraphs works as fillers in the deck. They help with some draw power because of their effects and are used to help make some rank 4s that uses 4 materials.

Scepter searches for Sovereignty from the deck, but if you already have Sovereignty in your hand, you'll be able to special summon the one in hand and the newly searched Sovereignty. This will already give you a +2 draw and 3 monsters on the field.

Once all Star Seraphs are on your field, you can make a Delteros or Ouroboros to activate Scepter's effect to destroy and draw a card before even using the Xyz monster's effect.

Use Diamond Core to add Iron Core of Koa'ki Meiru, Koa'ki Meiru Urnight or Koa'ki Meiru Maximus from your Deck to your hand. You can’t add another Diamond Core to your hand, but there is no restriction on how many you can activate in a turn.

If all of this wasn’t enough, you can banish Diamond Core from your Graveyard to prevent all “Koa'ki Meiru” monsters you control from being destroyed this turn. You can activate this effect the same turn you activated Diamond Core and make your monsters immune to cards like Treacherous Trap Hole, Widespread Ruin and Super Rush Headlong.

Since your monsters can’t be destroyed by battle this turn, you can also safely attack monsters with the same ATK with them. Most of the times you do not want to add Koa'ki Meiru Sandman to your hand with Diamond Core because Koa'ki Meiru Urnight can Special Summon it from your Deck.

Gives the deck an OTK option if your opponent has at least a 3000 ATK or lower monster, and you are low LP.

You can make this with the Star Seraphs or ranking up from Utopia.

Mainly to be used to rank up into Utopia Ray when you're at 1000 LP or lower.

Useful when going against opponents that only have 1 strong boss monster on the field, especially if it's an Xyz monster since banishing them will also remove the materials.

Very strong against decks like Harpies or Cyber Dragons since they use monsters with the same name.

A monster removal that mostly works on low level monsters, or dangerous monsters with low ATK like Bloom Diva the Melodious Choir.

Xyz into this with the Star Seraphs to get a card removal from Scepter's effect, then use Delteros for another.

Similar to Delteros, except Ouroboros' effects can only be used once each. Delteros can destroy a card once per turn each turn, but Ouroboros can only remove a card on the field once.

Effect is very niche, and only works when it battles makes it even more situational. It's better to rely on monster removals like Maximus or the extra deck monsters.

It will have some difficulty destroying monsters on its own, but if you play any ATK reducing/increasing cards, this can help get an easy OTK on its own.

This can help make the deck into a viable beatdown deck with any of the low level monster, or get over strong boss monsters that Maximus can't destroy with its effect.

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