Yu-Gi-Oh! · OTS Tournament Pack 20

King of the Swamp

French name: Roi des Marais

OP20-EN014Common

King of the Swamp (OTS Tournament Pack 20 OP20-EN014) has a market price of US$0.28 as of Nov 10, 2026.

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Price guide

The market price on TCGplayer, in US dollars: a guide, not an offer.

Market price

UnlimitedUS$0.28Low US$0.01

As of Nov 10, 2026 · The market price is TCGplayer’s, in US dollars. It is a guide, not an offer.

Card details

Type: Effect Monster
Level: 3
Attribute: WATER
Monster type: Aqua
ATK: 500
DEF: 1,100

Card text

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. Official Tournament Stores must review their Konami OTS agreement before selling this product.

About this card

King of the Swamp is card OP20-EN014 in OTS Tournament Pack 20, a Yu-Gi-Oh! set released Oct 26, 2022. Rarity: Common. Finishes: Unlimited. Reference market price on Nov 10, 2026: US$0.28. Over the last 30 days, the Unlimited price went down 15.2%. Source: TCGplayer market data via tcgcsv.com, updated daily. A reference price is not an offer.