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 - $0.40
Near Mint Non English - $0.40
Lightly Played - $0.40
Lightly Played Non English - $0.40
Moderately Played - $0.35
Moderately Played Non English - $0.35
Heavily Played - $0.30
Heavily Played Non English - $0.30
Damaged - $0.25
Damaged Non English - $0.25