Festercreep [Morningtide]

Set: Morningtide Type: Creature — Elemental Common Cost: {1}{B} 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.