Terror of the Peaks is a mythic Creature — Dragon card from Core Set 2021 Promos (PM21), collector number 164p. Current market price: $32.47 (foil $38.84), TCGplayer market prices via Scryfall.
Flying Spells your opponents cast that target this creature cost an additional 3 life to cast. Whenever another creature you control enters, this creature deals damage equal to that creature's power to any target.