Scourge of Skola Vale is a rare Creature — Hydra card from Born of the Gods (BNG), collector number 137. Current market price: $0.34 (foil $0.88), TCGplayer market prices via Scryfall.
Trample This creature enters with two +1/+1 counters on it. {T}, Sacrifice another creature: Put a number of +1/+1 counters on this creature equal to the sacrificed creature's toughness.