Deafening Clarion is a rare Sorcery card from Guilds of Ravnica (GRN), collector number 165. Current market price: $0.32 (foil $0.77), TCGplayer market prices via Scryfall.
Choose one or both — • Deafening Clarion deals 3 damage to each creature. • Creatures you control gain lifelink until end of turn.