mtg booster box vs collector booster Amazon.com: Magic: The Gathering Foundations : Toys & Games 1 card storage box Magic: The Gathering - Foundations

Card Text 2 [Special Rule] Overflow (-5) (As this card moves from the field or under a card to an area other than those, lose 5 memory.) Card Q&A Q4310 Jan

It turns all your artifacts and enchantments into 4/4s with indestructible that draw cards on hit

[1] During the Main Phase, if you activated a Spell this turn: You can Special Summon this card from your hand, also you cannot Special Summon monsters from the Extra Deck for the rest of the turn, except Xyz monsters

That on itself is already busted but the Radiant Greninja also comes with an amazing attack Moonlight Shuriken, which can dish out 90 damage to 2 of the opponent's Pokemon

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with "Twin Twister" or "Wavering Eyes", the significant loss of resources will make it difficult to establish or maintain the floodgate effects