Relentless Rats gets +1/+1 for each other creature on the battlefield named Relentless Rats. A deck can have any number of cards named Relentless Rats.
Near Mint - $4.20
Lightly Played - $3.80
Played - $3.00
Heavily Played - $2.60
Damaged - $2.10
Near Mint Non-English - $4.20
Lightly Played Non-English - $3.80
Played Non-English - $3.00
Heavily Played Non-English - $2.60
Damaged Non-English - $2.10