As an action, make a weapon attack as you strike a sensitive area.
On a hit, add the stamina die to the attackās damage and the creature must succeed on a Fortitude saving throw or it is blinded until the end of its next turn.
On a critical hit, add twice as much damage.
On a miss by 4 or less, add half as much damage.
Enhance
You can augment this maneuver with the following options, expending stamina dice for each option.
You can increase the damage for each additional stamina die expended.
You can expend 2 additional stamina die so the creature is blinded for 1 minute/stamina die. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.