Needs review
Source: Way of the Shugenja

Description: You perform a powerful attack that disrupts the flow of energies between the targets body and soul, greatly disrupting their ability to use magic or kiho

Prerequisites: Improved Unarmed Strike, DEX 15, Void Use, Base Attack Bonus +7

To use this kiho, you must spend a Void Point while making an unarmed attack roll. If this attack is successful, you disrupt the target's magical energies. When attempting to actively use any kiho feat, supernatural ability, spell-like ability, or cast a spell, the target must spend a Void Point or make a concentration check (DC 25); otherwise the attempt fails. Targets with spell resistance may apply it against this feat as if you were casting a spell. The effects of this feat last a number of rounds equal to your Dexterity modifier.