Cruul McGruel

Whenever an artifact you control enters the
graveyard from the battlefield, Cruul deals
damage equal to that artifact's mana value to a
random target creature.
{t}, Sacrifice X non-token artifacts: Create X red Unstable Explosive artifact tokens with "{1}{t}, Sacrifice this artifact: Unstable Explosive
deals 2 damage to any target." Activate only as a sorcery.
Chaos Crusader.