Bygone Colossus is a uncommon Artifact Creature — Robot Giant card from Edge of Eternities (EOE), collector number 235. Current market price: $0.35 (foil $0.37), TCGplayer market prices via Scryfall.
Warp {3} (You may cast this card from your hand for its warp cost. Exile this creature at the beginning of the next end step, then you may cast it from exile on a later turn.)