Needle Specter 
Creature — Specter
Flying Wither (This deals damage to creatures in the form of -1/-1 counters.) Whenever this creature deals combat damage to a player, that player discards that many cards.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL