Moonlight Stalker Feint

Combat

You strike through the shadows so quickly that your opponent can barely react to your attacks.

Prerequisite: Int 13, Blind-Fight, Combat Expertise, Moonlight Stalker, Bluff 6 ranks, darkvision or low- light vision racial trait.

Benefit: Once per round, against an opponent from whom you have concealment, you can spend a swift action to make a Bluff check to feint.

Normal: Feinting is a standard action.

Source: Ultimate Combat