Cataclysmic Gearhulk is a mythic Artifact Creature — Construct card from Kaladesh Promos (PKLD), collector number 9s. Current market price: — (foil $1.39), TCGplayer market prices via Scryfall.
Vigilance When this creature enters, each player chooses an artifact, a creature, an enchantment, and a planeswalker from among the nonland permanents they control, then sacrifices the rest.