|This card's written lore in the anime was not shown, was too small to read, or was partially or completely obstructed; the lore listed here is a reconstruction based on how it was used, character descriptions of the card, and/or its OCG/TCG lore. It may not be accurate or complete.|
King of the Swamp
- Japanese: 沼地の魔神王
- Romaji: Numachi no Mashin'ō
- Translated: Devil King of the Swamp
You can substitute this card for any 1 Fusion Material Monster. When you do this, the other Fusion Material Monster(s) must be the correct one(s). Discard this card from your hand to the Graveyard to add a "Polymerization" from your Deck to your hand. The Deck is then shuffled.
Anime cards (Galleries: GX)