Skithiryx, the Blight Dragon
Legendary Creature — Phyrexian Dragon Skeleton
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}: Skithiryx gains haste until end of turn.
{B}{B}: Regenerate Skithiryx.
FlyingInfect