King of the Swamp (LDK2-ENK17)

This card can be used as a substitute for any 1 Fusion Material whose name is specifically listed on the Fusion Monster Card, but the other Fusion Material(s) must be correct. You can discard this card to the Graveyard; add 1 "Polymerization" from your Deck to your hand.

Aqua / Effect, Legendary Decks II