King of the Swamp [HL1-EN006] Super Rare Psychic when a monster effect is

when a monster effect is activated on your opponent's side of the field: You can detach 1 Xyz Material from this card

during a turn in which you activated a Spell Card

Set: 2009 Collectors Tin Card type: Synchro/Effect Monster Rarity: Secret Rare Attack: 3800 Defense: 3000 "Majestic Dragon" + "Stardust Dragon" + 1 non-Tuner monster You can Tribute this card to negate the activation of an opponent's Spell Card

Set: Duelist League Promo Card type: Effect Monster Rarity: Rare Attack: 1700 Defense: 1200 Once per turn

King of the Swamp [HL1-EN006] Super Rare Psychic when a monster effect isSet: Hobby League 1 Card type: Effect Monster Rarity: Super Rare Attack: 500 Defense: 1100 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" Spell Card from your Deck to your hand. The Deck is then shuffled.