Explosão Betuminosa / Bituminous Blast

Bituminous Blast {3}{B}{R}
Instant
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.
Illustrated by Raymond Swanland