Instant, 2R (3)
Common
Wither (This deals damage to creatures in the form of -1/-1 counters.)
Puncture Blast deals 3 damage to target creature or player.
Gnarltrunk didn't remember having quite that many knotholes.
Illus. Carl Critchlow

8/1/2008: This is the only instant or sorcery spell that has wither. It works like anything else with wither: If it deals damage to a creature, the damage results in -1/-1 counters; if it deals damage to a player or planeswalker, the damage behaves normally.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern