Claws of the Beast

 
Prerequisite(s): Chaotic: Evil or Neutral.
 
Benefit: Your hands are twisted like claws. This deformity allows you to deal more damage than usual with your unarmed strikes and sneak attacks. Your natural weapons or unarmed strikes gain a +1 profane bonus on damage rolls. This bonus increases by 1 for every two Abyssal feats you possess.
 
Special: Your talons make subtle manipulation of objects more difficult, imposing a -2 penalty on Sleight of Hand checks.
 
Source:Fiendish Codex I: Hordes of the Abyss