Disturbing Visage( Races of Eberron, p. 117)
You can change your features to chilling effect.
Quick Change (RE) , Bluff 6 ranks, Changeling,
The Disturbing Visage feat enables the use of three tactical maneuvers. Creatures immune to mind-affecting spells and abilities cannot be affected by this feat; regardless of the outcome of the opposed check, a creature can be affected only once by each of these maneuvers in a 24-hour period. Cringe: You change your features to appear weak and unworthy of an opponent's best efforts. To use this maneuver, you must use your minor change shape ability and take the total defense action in the same turn. You then make a Bluff check as a free action. From the end of your turn until the beginning of your next turn, any opponent that attempts to make a melee attack against you must make a Sense Motive check opposed by your Bluff check result. Failure means that the opponent takes a -5 penalty on weapon damage rolls (minimum 1 point) against you for 1 minute. Taunt: You change your features to mock an opponent. To use this maneuver, you must use your minor change shape ability to mimic the features of a selected target creature, who must be no more than 10 feet from you, must have missed you with a melee or ranged attack in the previous round, and is a humanoid, monstrous humanoid, or giant. You then make a Bluff check as a free action, opposed by the selected creature's Sense Motive check. If your check is successful, your foe takes a -2 penalty on attack rolls for 1 minute. Unnerve: You change your features to become a more terrifying foe. To use this maneuver, you must hit the target creature with a melee attack and use your minor change shape ability in the same round. You then make a Bluff check as a free action, opposed by a Sense Motive check from the foe you hit. If your check is successful, your foe takes a -2 penalty to AC for 1 minute.