Phyrexian Ironfoot is a uncommon Snow Artifact Creature — Phyrexian Construct card from Coldsnap (CSP), collector number 139. Current market price: $0.27 (foil $1.30), TCGplayer market prices via Scryfall.
This creature doesn't untap during your untap step. {1}{S}: Untap this creature. ({S} can be paid with one mana from a snow source.)