Trumpeting Carnosaur is a rare Creature — Dinosaur card from The Lost Caverns of Ixalan (LCI), collector number 324. Current market price: $2.25 (foil $4.48), TCGplayer market prices via Scryfall.
Trample When this creature enters, discover 5. {2}{R}, Discard this card: It deals 3 damage to target creature or planeswalker.