Rending Flame is a uncommon Instant card from Innistrad: Crimson Vow (VOW), collector number 175. Current market price: $0.14 (foil $0.21), TCGplayer market prices via Scryfall.
Rending Flame deals 5 damage to target creature or planeswalker. If that permanent is a Spirit, Rending Flame also deals 2 damage to that permanent's controller.