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
Lightly Played - $0
Moderately Played - $0
Heavily Played - $0
Damaged - $0
Near Mint Spanish - $0
Lightly Played Spanish - $0
Moderately Played Spanish - $0
Heavily Played Spanish - $0
Damaged Spanish - $0