Briarhorn is a uncommon Creature — Elemental card from The List (PLST), collector number DDR-3. Current market price: $0.16, TCGplayer market prices via Scryfall.
Flash When this creature enters, target creature gets +3/+3 until end of turn. Evoke {1}{G} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)