Needs review
Source: Sandstorm

Description: Your unarmed strikes echo with thunder, stunning your foe and those nearby.

Prerequisites: Improved Unarmed Strike, Stunning Fist, STR 15

You must declare that you are using this feat before you make your attack roll (thus, a failed attack roll ruins the attempt). By expending one Stunning Fist use for the day, you force an opponent successfully struck by your unarmed attack, and all creatures adjacent to that opponent, to make a Fortitude saving throw (DC 10 + 1/2 your character level + your Wis modifier) or be stunned for 1 round. The opponent struck by the unarmed attack is dealt damage normally. This feat can be used only once per round.

Special

A fighter may select Pharaoh's Fist as one of his fighter bonus feats.