Contamination [Urza's Saga] Goblin Assassin Set: Commander 2014 Type: Instant

Set: Commander 2014 Type: Instant Rarity: Rare Cost: {1}{U} Return target nonland permanent you don't control to its owner's hand

unless you pay {B}{B}{B}

Set: Core Set 2019 Prerelease Promos Type: Sorcery Rarity: Mythic Cost: {2}{G}{G} Sacrifice any number of lands

Set: Unlimited Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {2}{U}{U} Enchant creature

untap up to seven lands

Contamination [Urza's Saga] Goblin Assassin Set: Commander 2014 Type: InstantSet: Urza's Saga Type: Enchantment Rarity: Rare Cost: {2}{B} At the beginning of your upkeep, sacrifice Contamination unless you sacrifice a creature. If a land is tapped for mana, it produces {B} instead of any other type and amount.