Curse of the Softened Blade [Hex]

Your hexblade's curse hampers your enemy's weapons.
Prerequisites: Any other two hex feats, curse ability.
Benefit: When using your hexblade's curse ability, you can reduce the potency of one of your victim's weapons. As a hexblade's curse the cursed weapon deals -2 points of damage (Minimum 1), as a greater curse this penalty increases to -4, and as a dire curse this penalty increases to -6.