Gnashing of Teeth is a uncommon Sorcery card from The Hobbit (HOB), collector number 69. Current market price: $0.14 (foil $0.25), TCGplayer market prices via Scryfall.
Choose one — • Target creature gets -5/-5 until end of turn. If that creature would die this turn, exile it instead. • Creatures target player controls get -1/-1 until end of turn.