Bituminous Blast [Commander 2016]

Set: Commander 2016 Type: Instant Rarity: Uncommon Cost: {3}{B}{R} Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)Bituminous Blast deals 4 damage to target creature.