Scorvos, Nightmarish Isopod

Flying, First Strike
All insects you control gain +2/+2 and gain riot. (This creature enters the battlefield with your choice of a +1/+1 counter or haste.)
If an insect you control would die, draw X cards where X is that creature's power, then add X +1/+1 counters to any number of creatures you control divided by how many creatures you control.