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 - $3.50
Lightly Played - $3.25
Moderately Played - $2.75
Heavily Played - $2.25
Damaged - $1.75
Near Mint Non-English - $3.50
Lightly Played Non-English - $3.25
Moderately Played Non-English - $2.75
Heavily Played Non-English - $2.25
Damaged Non-English - $1.75