Thunder-Thrash Elder is a uncommon Creature — Lizard Warrior card from Shards of Alara (ALA), collector number 117. Current market price: $0.09 (foil $0.24), TCGplayer market prices via Scryfall.
Devour 3 (As this creature enters, you may sacrifice any number of creatures. It enters with three times that many +1/+1 counters on it.)