Battle at the Bridge [Aether Revolt]

Set: Aether Revolt Type: Sorcery Rarity: Rare Cost: {X}{B} Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)Target creature gets -X/-X until end of turn. You gain X life. "This is bigger than you. All of you." —Tezzeret