Bel'Veth, Void Empress

Flying, Double strike
When a creature delt damaged by Bel'Veth dies
put a Void counter on Bel'Veth Void Empress.
Remove any number of Void counters from
Bel'Veth to make X 2/2 colorless horror
creature tokens.
Remove 10 void counters to transform
Bel'Veth Void Empress.