Black Sun's Twilight [Phyrexia: All Will Be One]

Set: Phyrexia: All Will Be One Type: Instant Rarity: Rare Cost: {X}{B} Up to one target creature gets -X/-X until end of turn. If X is 5 or more, return a creature card with mana value X or less from your graveyard to the battlefield tapped. “Where once there was complacence, Sheoldred brought ambition, and soon the will of Yawgmoth reigned.” —Monument inscription