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Pojo's Yu-Gi-Oh! Card of the Day
Daily Since 2002!

Diamond Core of Koa'ki Meiru
- #PRIO-EN065 

Add 1 "Koa'ki Meiru" card from your Deck to your hand, except "Diamond Core of Koa'ki Meiru". You can banish this card from your Graveyard; for the rest of this turn, "Koa'ki Meiru" monsters you control cannot be destroyed.

Card Ratings
Traditional: 1.50
Advanced: 3.70 

Ratings are based on a 1 to 5 scale
1 is Horrible. 3 is Average. 5 is the highest rating.

Date Reviewed:
July 16, 2014

Back to the main COTD Page



Diamond Core of Koaki Meiru

Let's make it straight and simple. This card is a ROTA (Reinforcement of the Army) for Koaki Meiru decks and you can use three of them. Can you name one deck type that would not want a ROTA? Any smart sane player using the deck type will want to use 3 of them.

It's a 1-for-1 are the bare minimum, except you can pick whichever card you need for the situation. The protection effect (which comes from banishing this card) is a nice added on bonus. It'll help an aggressive push you make, even though your opponent will be able to see it coming and it won't be fast enough (in terms of Spell Speed) to negate cards like Solemn Warning. So, at the very least, you get a 1-for-1. You can get more out of it depending on how you use it.

Will this make Koaki Meiru decks top-tier? No. But it will improve their consistency and perhaps they could be semi-competitive if any new strategies for the deck are discovered.

Traditional - 2
Advanced - 4


Do you want to design yugioh cards? Ever wonder if you'd do a good job? Well worry no further, for I have just the solution for you! Look at the Koa'ki Meiru archetype! From its horribly-translated name, to its random monsters with no coherence, to its awful maintenance costs, it is one of the most horribly-designed messes in modern yugioh. If you can look at this duct taped archetype and do nothing it does, you're already on your way to creating a masterpiece archetype.

Yes, ladies and gents, today we're looking at a Koa'ki Meiru card: Diamond Core of Koa'ki Meiru. This is a card that searches out any "Koa'ki Meiru" card except itself, and at any point during your turns, you can banish it to make your Koa'ki Meiru monsters indestructible (to avoid the maintenance cost). This is Konami's latest job of administering duct tape to an already cobbled-together mess of an archetype... and this actually does a fairly good job of it. I mean, with the ability to search out any card in the archetype for no cost other than activating a spell, it'd be fairly hard for it to be bad.

But in truth, this is not what Koa'ki Meiru needed, as the deck is still horribly inconsistent. What the archetype needs is a Stratos (re: a monster that searches out a "Koa'ki Meiru" card on summon) that is a Beast-Warrior. What this means is you can get to your Urknight or Crusaders faster, and keep them on the field because you now have a good monster you can reveal, and has great synergy with Fire Formation - Tenki. Diamond Core ups the playability immensely, but the archetype suffers from a lack of direction.

Traditional: 1/5
Advanced: 3/5

Announcement: I am appalled by the cards of tomorrow and the day after tomorrow (MOVIE REFERENCE!), so I shan't be reviewing them. Their design is too disgusting for me to bother with, dearests, and I know you'd rather not read paragraph after paragraph of me saying how horrible said card designs are.


Hello Pojo Fans,

Looking into Koa'Ki decks today with their staple card. Searching out a monster or card for your decks theme is good, especially in a deck that plays different types of monsters. After you get your card, you can banish this card to protect all your “Koa'Ki” monsters this turn. Though you can only activate this card during your turn, this saves all “Koa'Ki” monsters from being destroyed by their own effects. When topdecking and this card is in the graveyard, this card is a lifesaver when you MUST keep a monster on the field. This allows you, when not having a hand with “Koa'Ki” monsters to be offensive with them and not worry about their destruction. This is the card the archetype needed: a card to search any themed card for the deck, then the ability to protect all KoaKis from anything (even themselves).

This card is a 5/5 for the Koa'Ki deck, and must be run in 3's.

Traditional-1/5- can't be used in any deck other than Koa'Ki
Advanced-1/5- can't be used in any deck other than Koa'Ki


Diamond Core of Koa'ki Meiru

Koa'ki Meiru has been one of the more interesting and random archtypes Konami has presented us with. While they almost inherently cannot function together, except in extraordinary circumstances like Jeff Jones' build of Koaki Beast Warriors from this past weekends WCQ, the Diamond Core is something they've sorely needed. It's a Reinforcement of the Army for the theme so it can be splashed into any deck that runs Koaki's for whatever reason. The old Birdman Gallis KKM Doom burn deck? yup. Disaster Dragon with the Dragos(or even the maximus version)? Absolutely. Jeff Jones build? obviously. It lets you get a Koaki CARD..so it's really more a Koaki Table of Contents letting you search both Monster or Spell/trap. Now if this is ALL it did, it'd be a pretty damn good card...I can minorly swear on here right? Anyways, the 2nd effect is like icing on the cake, the really creamy chocolate fudge kind of frosting. By banishing it from the graveyard, Koaki Meriu Monsters cannot be destroyed. Summons can be negated sure, but no bottomless, no torrential, no mirror force, no hands, no nothing can kill them. Their end phase effects don't even have to be applied so it keeps the contents of your hand secret for at least 1 more turn.

Traditional - 2/5 KKM Drago definitely hurts chaos builds disallowing the summon of BLS/CED as well as the Cyber Stein fusions or most fusions you could get with scientist and this searches it...so it get's a degree of a pass.

Advanced 3.5/5 - Much like Raiden for Lightsworn, this was a shot in the arm for a few decks that can actually play Koaki Meiru monsters. Even though he bubbled out, I doubt Mr. Jones or anyone else who has played the monsters would do as well without this in their spell lineup.


Diamond Core of Koa'Ki Meiru

Reinforcement of the Army + a blanket Forbidden Dress...
Hey guys today we are looking at Diamond Core of Koa'ki Meiru. On the surface it allows us to search the deck for 1 "Koa'ki Meiru" card. Not only monsters. Also cards like Iron Core of Koa'ki Meiru, a previously inconsistent card, but absolutely crucial for Koa'ki Meiru decks to function. The other half of the effect is compared to Forbidden Lance in the sense that it protects your monster. Though some factors set it apart. a) Diamond Core is Spell Speed 1, and cannot be chained to your opponents cards. b) I feel this is a HUGE advantage for the card and is the reason I will rate it as I do "this turn Koa'ki Meiru monsters you control cannot be destroyed." This is huge! Why? Because if you are playing into set 5 you can banish Diamond Core BEFORE you Normal Summon and your monsters will still recieve protection. Yep, this means about the only thing that can stop it on summon is Solemn Warning or Compulsory Evacuation Device and not much other than Dimensional Prison can stop it elsewhere. There are 2 potentially relevant decks that can use this card and they are Koa'ki Meiru Fire Fist and Rock Stun. With a near empty opposing board you can put at least 4000 Damage on board just from Urknight and his effect. Rock Stun has yet to be tried and tested, but is something I know a few anti-meta players have looked at.

I can see very little relevance for either deck in the Traditional format aside from Urknight + Tensu into Shock Master.

Traditional: 1.5
Advanced: 3
Side Note: Was hoping this card was going to be at least a Super Rare :(

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