King of the Swamp
Aqua / Effect
WATER / 
3This 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.
500/1100
CARD ID: 79109599
STATUS TCG: Unlimited
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| TCG Set | Symbol | Rarity | Low | Avg | Trend | |
|---|---|---|---|---|---|---|
| Ancient Sanctuary | AST-082 | Rare | -,--€ | -,--€ | -,--€ | |
| Dark Revelation Volume 2 | DR2-EN195 | Common | -,--€ | -,--€ | -,--€ | |
| Duel Terminal 4 | DT04-EN055 | Duel Terminal Normal Parallel | -,--€ | -,--€ | -,--€ | |
| Fusion Enforcers | FUEN-EN040 | Super Rare | -,--€ | -,--€ | -,--€ | |
| Hobby League 1 participation cards C | HL1-EN006 | Super Rare | -,--€ | -,--€ | -,--€ | |
| Legendary Collection 3: Yugi's World Mega Pack | LCYW-EN256 | Common | -,--€ | -,--€ | -,--€ | |
| Legendary Decks II | LDK2-ENK17 | Common | -,--€ | -,--€ | -,--€ |
This card’s effect makes it the monster card version of Fusion Sage, albeit arguably better due to being able to be used as a fusion substitute as well.
This is an upgraded version of Beastking of the Swamps, due to being able to search Polymerization in addition to being a Fusion Substitute Monster.
This card resembles the DC/Vertigo Comics character Swamp Thing.
This monster appears in the artworks of Dark Contract with the Swamp King and Forbidden Dark Contract with the Swamp King.
This monster also appears in the artwork of Fusion Tag as a dog tag.
This is an upgraded version of Beastking of the Swamps, due to being able to search Polymerization in addition to being a Fusion Substitute Monster.
This card resembles the DC/Vertigo Comics character Swamp Thing.
This monster appears in the artworks of Dark Contract with the Swamp King and Forbidden Dark Contract with the Swamp King.
This monster also appears in the artwork of Fusion Tag as a dog tag.
OCG Rulings
If you have no copy of "Polymerization" in your Deck, you cannot activate the effect of "King of the Swamp", and you cannot activate "Fusion Sage
You can only get 1 copy of "Polymerization" when you discard "King of the Swamp" from your hand.
If "King of the Swamp" is selected for the effect of "Prohibition", you cannot use either of its effects.
Discarding this card is a cost.
If you use "King of the Swamp" as Fusion Material from your hand, you do not get to activate its effect to search your Deck for "Polymerization".
You can activate the effect of "King of the Swamp" even if all 3 of your "Polymerization" cards are in your Graveyard.An email ruling states that "King of the Swamp" can only be discarded if the player has at least 1 "Polymerization" in their Deck.
Fusion Substitute Monster Rulings
{{:Card Rulings:Fusion Substitute Monster