Festercreep enters the battlefield with a +1/+1 counter on it.
{1}{B}, Remove a +1/+1 counter from Festercreep: All other creatures get -1/-1 until end of turn.
A single festercreep isn't alone. It's already an infestation.
Near Mint - $0.70
Near Mint Non-English - $0.70
Lightly Played - $0.60
Lightly Played Non-English - $0.60
Played - $0.50
Played Non-English - $0.50
Heavily Played - $0.40
Heavily Played Non-English - $0.40
Damaged - $0.40
Damaged Non-English - $0.40