yugioh koa ki meiru cards Koa'ki Deck September 2013 This card gains ATK equal to half the combined ATK of the monsters equipped to it by this effect Yu-Gi-Oh! Card SOVR-EN081 Koa'ki Meiru

You can pick a card from your deck and essentially put it into play if you win

For example, a creature with protection from blue cannot be blocked by blue creatures, dealt damage by blue creatures, or enchanted, damaged, or otherwise affected by blue cards

During the End Phase, return this card to your Deck, then add a "Sigil" Continuous Spell or Trap Card from your deck to your hand, except Sigil of Faith.[/spoiler] [spoiler=Sigil of Courage] You can only control 1 face-up 'Sigil' Continuous Spell or Trap Card

That means you can build your deck with a customized package of spells, always ready with the perfect trick for whatever situation comes up

I dont see anyone actually using this, though

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