King of the Swamp (CR) (JUSH-EN046) - (Collector's Rare) - Justice Hunters 1st Edition

This card in your hand, field, or GY can be used as a substitute for any 1 Fusion Material whose name is mentioned on the Fusion Monster Card, but the other materials must be correct. You can discard this card to the GY; add 1 "Polymerization" from your Deck to your hand.