Exploding Barrel (Teenage Mutant Ninja Turtles Eternal #39)

Artifact - {3}
{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 a sorcery.
„"Good news, dudes! It says it's inflammable!"
—Michelangelo“