The Swarm Incarnate

When The Swarm Incarnate enters the battlefield, put X +1/+1 counters on it and
create X 1/1 Green Insect creature tokens.
When The Swarm Incarnate dies, create a
number of 1/1 Green Insect creature tokens
equal to its power.
{b}, Sacrifice 10 Insects: Destroy target
permanent.