Cats you control have protection from Rats. (They can't be blocked, targeted, or dealt damage by Rats.)
At the beginning of your end step, target opponent creates a 1/1 black Rat creature token with deathtouch.
Whenever a Rat dies, put a +1/+1 counter on each Cat you control.
Near Mint - $3.40
Near Mint Non-English - $3.40
Lightly Played - $3.10
Lightly Played Non-English - $3.10
Played - $2.40
Played Non-English - $2.40
Heavily Played - $2.10
Heavily Played Non-English - $2.10
Damaged - $1.70
Damaged Non-English - $1.70