Spinerock Tyrant 159 (Lorwyn Eclipsed)

Flying Wither (This deals damage to creatures in the form of -1/-1 counters.) Whenever you cast an instant or sorcery spell with a single target, you may copy it. If you do, those spells gain wither. You may choose new targets for the copy.

NM - $3.00
LP - $2.40
MP - $2.20
HP - $2.20
DMG - $2.20