Phyrexian Ironworks is a uncommon Artifact card from Modern Horizons 3 (MH3), collector number 130. Current market price: $0.21 (foil $0.31), TCGplayer market prices via Scryfall.
Whenever you attack, you get {E} (an energy counter). {T}, Pay {E}{E}{E}: Create a 3/3 colorless Phyrexian Golem artifact creature token. Activate only as a sorcery.