Dross Golem is a common Artifact Creature — Golem card from Darksteel (DST), collector number 119. Current market price: $0.16 (foil $0.49), TCGplayer market prices via Scryfall.
Affinity for Swamps (This spell costs {1} less to cast for each Swamp you control.) Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)