Golem Foundry is a common Artifact card from Scars of Mirrodin (SOM), collector number 160. Current market price: $0.28 (foil $7.04), TCGplayer market prices via Scryfall.
Whenever you cast an artifact spell, you may put a charge counter on this artifact. Remove three charge counters from this artifact: Create a 3/3 colorless Golem artifact creature token.