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also known as the Base Set
C Common Magikey Unlocking X TRAP Counter When your opponent activates a Spell/Trap Card while you control a "Magikey" Ritual Monster or a "Magikey" monster Special Summoned from the Extra Deck: Negate the activation, and if you do, destroy that card, then you can declare 1 Attribute, and if you do that, for the rest of this turn all face-up monsters your opponent controls become that Attribute
a giant, goopy purple mouth with a tongue, and two cat-like eyes peering out of the darkness within the maw
Hydrogeddon X WATER Level 4 [ DinosaurEffect ] ATK 1600 DEF 1000 When this card destroys an opponent's monster by battle and sends it to the GY: You can Special Summon 1 "Hydrogeddon" from your Deck
Any sort of other monster that can help you thin the deck or search your combo will also work