Glassdust Hulk is a common Artifact Creature — Golem card from Alara Reborn (ARB), collector number 7. Current market price: $0.25 (foil $0.50), TCGplayer market prices via Scryfall.
Whenever another artifact you control enters, this creature gets +1/+1 until end of turn and can't be blocked this turn. Cycling {W/U} ({W/U}, Discard this card: Draw a card.)