Void Grafter is a uncommon Creature — Eldrazi Drone card from Oath of the Gatewatch (OGW), collector number 150. Current market price: $0.27 (foil $1.11), TCGplayer market prices via Scryfall.
Devoid (This card has no color.) Flash (You may cast this spell any time you could cast an instant.) When this creature enters, another target creature you control gains hexproof until end of turn.