SRD:Acidic Blast (Epic Weapon Enhancement)

Acidic Blast
On command, an acidic blast weapon drips acid (though this deals no damage to the wielder). On any hit, this acid splashes the creature struck, dealing +3d6 points of bonus acid damage. On a successful critical hit it instead deals +6d6 points of acid damage (or +9d6 if the critical multiplier is x3, or +12d6 if the critical multiplier is x4). Bows, crossbows, and slings with this special ability bestow the bonus acid damage upon their ammunition.

Caster Level: 21st; Prerequisites: Craft Magic Arms and Armor, Craft Epic Magic Arms and Armor, acid fog; Market Price: +6 bonus.