Glassdust Hulk is a uncommon Artifact Creature — Golem card from Modern Masters 2015 (MM2), collector number 177. Current market price: $0.29 (foil $0.24), 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.)