Vaal Hazak, Corpse Dragon

Flying
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
{b} :Vaal Hazak, Corpse Dragon gains haste until
the end of the turn.
{b}{b} :Regenerate Vaal Hazak, Corpse Dragon.
—
A grotesque elder dragon that uses the fatal vapor of the vale.