YZ-Tank Dragon [MFC-054] Super Rare
1st Edition - LP
Not Buying
![King of the Swamp (PSR) [SBC2-ENI23] Prismatic Secret Rare](https://cdn.shopify.com/s/files/1/0836/1931/6002/files/ygo_placeholder_b4f6f178-ac42-4f89-9160-0de9cc1d0f3d.png?v=1733760054)
King of the Swamp (PSR) [SBC2-ENI23] Prismatic Secret Rare
| Set: | Speed Duel: Battle City Finals |
| Card type: | Effect Monster |
| Rarity: | Prismatic Secret Rare |
| Attack: | 500 |
| Defense: | 1100 |
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.