Blix, Vexing Vermin

Double Strike
Other pests, bats, insects, snakes, spiders,
scorpions, worms and wurms you control
gain +1/+2
Whenever a human leaves the battlefield, Blix,
Vexing Vermin gains +2/+2.
Pursue --- Whenever Blix, Vexing Vermin
attacks, create 1/1 white Human creature tokens
equal to its power.