Dirty Fighting

Dirty Fighting [Warrior] Prerequisite: Melee BAB >= 2, Improved Initiative, Find Weakness >= +10.           OR: Brawl BAB >= 2, Improved Initiative, Find Weakness >= +10. Benefit: You are skilled at the brutal and effective fighting tactics of the streets and back alleys. When you make a successful attack against an enemy with vital areas (i.e., vulnerable to critical hits), and the enemy's Wisdom is lower than your own, you are able to 'get the drop on' them once per fight, inflicting +1d8 untyped damage on the first qualifying hit, as well as blinding the foe for 1d4+1 rounds if he fails a Reflex save against DC (10 + 1/2 your BAB + your Wisdom modifier).   The Noble Aegis ability protects against the effects of this feat.