Gravity Negator is a common Creature — Eldrazi Drone card from Oath of the Gatewatch (OGW), collector number 45. Current market price: $0.05 (foil $0.38), TCGplayer market prices via Scryfall.
Devoid (This card has no color.) Flying Whenever this creature attacks, you may pay {C}. If you do, another target creature gains flying until end of turn. ({C} represents colorless mana.)