Festercreep {1}{B}
Creature — Elemental
This creature enters with a +1/+1 counter on it.
{1}{B}, Remove a +1/+1 counter from this creature: All other creatures get -1/-1 until end of turn.
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Cards that do something similar expected a card that isn't here?
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Drakestown Forgotten 88%
#22994
"{2}{B}, Remove a +1/+1 counter from this creature: Target creature gets -1/-1 until end of turn."
+1 more matching line
Mindwarper 82%
$0.24#30206
"{2}{B}, Remove a +1/+1 counter from this creature: Target player discards a card. Activate only as a sorcery."
+1 more matching line