Xelax, Dargoran Leader

Xelax, Dargoran Leader enters the battlefield
with five -1/-1 counters on it. Whenever Xelax,
Dargoran Leader deals damage to a creature or
player, remove one -1/-1 counter from it and
put it onto target creature.
{b}{b}: deal 3 damage to target creature or
player and you lose 1 life.