Will-Forged Golem is a common Artifact Creature — Golem card from Magic 2015 (M15), collector number 239. Current market price: $0.05 (foil $0.17), TCGplayer market prices via Scryfall.
Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)