Colossus of Sardia is a rare Artifact Creature — Golem card from Antiquities (ATQ), collector number 46. Current market price: $36.31, TCGplayer market prices via Scryfall.
Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.) This creature doesn't untap during your untap step. {9}: Untap this creature. Activate only during your upkeep.