Bosh, Iron Golem is a rare Legendary Artifact Creature — Golem card from Mirrodin (MRD), collector number 147. Current market price: $0.31 (foil $9.03), TCGplayer market prices via Scryfall.
Trample {3}{R}, Sacrifice an artifact: Bosh deals damage equal to the sacrificed artifact's mana value to any target.