Bel'Veth, the Void Empress

{4}{r}{r}: Monstrosity 4. (If this creature isn’t monstrous, put four +1/+1 counters on it and it becomes monstrous.)

When Bel'Veth becomes monstrous, create X
1/1 black Void Grub creature tokens. Where X
is the number of creatures that died this turn.