Nval, Volcano Demon

Trample, Hex Surge (Creatures can't block this
creature's abilities)
When Nval, Volcano Demon enters the
battlefield, put a -1/-1 counters on each of your
opponent's creatures, unless they pay {2} for each creature.
Unearth {3}{b} (Return this card from your graveyard
to the battlefield. It gains haste. Exile it at the beginning
of your next turn.Unearth only as a sorcery.)