Mycosynth Golem is a rare Artifact Creature — Golem card from Fifth Dawn (5DN), collector number 137. Current market price: $53.97 (foil $112.76), TCGplayer market prices via Scryfall.
Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) Artifact creature spells you cast have affinity for artifacts. (They cost {1} less to cast for each artifact you control.)