Otherworldly Countenance( Fiendish Codex I: Hordes of the Abyss, p. 87)
You are either stunningly beautiful or wretchedly hideous. Either way, your appearance can be terribly unsettling to others upon whom you focus your attentions.
When you take this feat, you must decide whether you are unusually beautiful or unusually hideous. Once you make this choice, you cannot change it. You gain a bonus on Perform checks (if you chose beauty) or Intimidate checks (if you chose ugliness) equal to the number of Abyssal heritor feats you possess. As a full-round action, you can attempt to distract a target within 30 feet by focusing your attention upon it. The target must be able to see you and can resist your distracting appearance by making a Will save (DC 10 + 1/2 your character level + your Cha modifier). Failure indicates that the target is fascinated (if you are beautiful) or sickened (if you are ugly) for as long as you remain in its line of sight. You can affect a specific creature in this manner only once per day. This ability is usable a number of times per day equal to the number of Abyssal heritor feats you possess.
Your appearance is so striking that it's difficult to hide. You take a -2 penalty on Disguise checks.