Stalking Drone is a common Creature — Eldrazi Drone card from Oath of the Gatewatch (OGW), collector number 124. Current market price: $0.04 (foil $0.32), TCGplayer market prices via Scryfall.
Devoid (This card has no color.) {C}: This creature gets +1/+2 until end of turn. Activate only once each turn. ({C} represents colorless mana.)