Thunderblust

Thunderblust

Creature - Elemental | Power/Toughness: 7 / 2 (CMC 5)
Haste
Thunderblust 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.)