mtg burrowinglimited edition alpha Onslaught sacrifice Contamination unless you sacrifice

sacrifice Contamination unless you sacrifice a creature

Set: Scars of Mirrodin Type: Artifact Rarity: Rare Cost: {3} Imprint — When Semblance Anvil enters the battlefield

Set: Duel Decks Anthology Type: Creature — Faerie Rogue Rarity: Common Cost: {1}{B}{B} Flying

Some are filled with water

If that card's mana value is less than or equal to the sacrificed artifact's mana value

mtg burrowinglimited edition alpha Onslaught sacrifice Contamination unless you sacrificeSet: Alpha Edition Type: Enchantment Aura Rarity: Uncommon Cost: {R} Enchant creature Enchanted creature has mountainwalk. (It can't be blocked as long as defending player controls a Mountain.)