Jane Doe

Whenever Jane or another Rat you control enters, create a 1/1 black Snail creature token if you don't control a Snail. Otherwise, put a +1/+1 counter on a Snail you control.

{u}{b}{r}, Sacrifice a Snail: Jane deals damage equal to the sacrificed creature's power to each opponent.
Then draw cards equal to the sacrificed creature's power