Thunderblust is a rare Creature — Elemental card from Modern Masters 2015 (MM2), collector number 131. Current market price: $0.52 (foil $1.65), TCGplayer market prices via Scryfall.
Haste This creature has trample as long as it has a -1/-1 counter on it. Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)