Necroskitter is a rare Creature — Elemental card from Modern Masters 2015 (MM2), collector number 88. Current market price: $5.16 (foil $22.69), TCGplayer market prices via Scryfall.
Wither (This deals damage to creatures in the form of -1/-1 counters.) Whenever a creature an opponent controls with a -1/-1 counter on it dies, you may return that card to the battlefield under your control.