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.
Official Rulings for Puncture Blast
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.