Bel'Veth, Face Revealed

Menace, Flying, Lifelink
Whenever a creature an opponent controls dies,
put a +1/+1 counter on Bel'Veth, Face Revealed
and create a 1/1 colorless Voidling creature token.
At the beginning of your end step, sacrifice
another creature. If you can't, transform
Bel'Veth, Face Revealed.
"I am the voice of silence."