FISTS OF IRON [Combat, Martial]

    You have learned the secrets of imbuing your unarmed attacks with extra force.
Prerequisite: Improved Unarmed Strike, BAB +2.
Benefit: Declare that you are using this feat before you make
your attack roll (thus, a missed attack roll ruins the attempt).  You deal an extra 1d4 points of damage when you make a successful unarmed attack.  You may use this feat a number of times per day equal to three + your Wisdom modifier.