Flaying Tendrils is a uncommon Sorcery card from Oath of the Gatewatch (OGW), collector number 70. Current market price: $0.06 (foil $0.20), TCGplayer market prices via Scryfall.
Devoid (This card has no color.) All creatures get -2/-2 until end of turn. If a creature would die this turn, exile it instead.