Duoterion [LEDU-EN037] Super Rare URL/Convention Promos sacrifice Contamination unless you sacrifice

sacrifice Contamination unless you sacrifice a creature

Zendikar shivered

you may put Nether Shadow onto the battlefield

Set: Arena League 2000 Type: Basic Land — Swamp Rarity: Rare ({T}: Add {B}

so did their defenses

Duoterion [LEDU-EN037] Super Rare URL/Convention Promos sacrifice Contamination unless you sacrificeSet: Legendary Duelists Card type: Effect Monster Rarity: Super Rare Attack: 2000 Defense: 1400 You can discard this card; add 1 "Bonding" Spell Trap from your Deck to your hand. If this card is Normal or Special Summoned: You can target 1 "Hydrogeddon", "Oxygeddon", or "Duoterion" in your GY; Special Summon it. You can only use each effect of "Duoterion" once per turn.