Noxious Gearhulk is a mythic Artifact Creature — Construct card from Kaladesh Promos (PKLD), collector number 96p. Current market price: $8.63 (foil $18.44), TCGplayer market prices via Scryfall.
Menace When this creature enters, you may destroy another target creature. If a creature is destroyed this way, you gain life equal to its toughness.