Mindmelter is a uncommon Creature — Eldrazi Drone card from Oath of the Gatewatch (OGW), collector number 149. Current market price: $0.09 (foil $0.53), TCGplayer market prices via Scryfall.
Devoid (This card has no color.) This creature can't be blocked. {3}{C}: Target opponent exiles a card from their hand. Activate only as a sorcery. ({C} represents colorless mana.)