Leyline, Void's Chosen

Leyline, Void's Chosen enters the battlefield
with ten voice counters on it.
{3}: Remove a voice counter.
When Leyline, Void's Chosen has no voice
counters on it, sacrifice it. If you do, create
Leyline, Awakened, a legendary 20/20 black
Avatar creature token with flying and indestructible.