Exploding Barrel (Surge Foil)

Set: Commander: Teenage Mutant Ninja Turtles (#39)

Rarity: Rare

Type: Artifact

T: Add one mana of any color. Put a pressure counter on this artifact. 8, T, Sacrifice this artifact: It deals 20 damage to target creature. This ability costs 1 less to activate for each pressure counter on this artifact. Activate only as sorcery.