Deafening Strike (3.5e Feat)
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Deafening Strike [Class]
Your attacks can channel the power of your Echo Blade into loud assaults on the opponent's hearing.
Prerequisite: Echo Knife, Hyper Sound +2d6 or better as a class feature
Benefit: When you hit an opponent with an Hyper Sound attack, you have the choice to deafen him so he cannot hear anything but your Echo Blade. You may use this attack up to 3 + your Intelligence modifier times per day.
Special: Improved Deafening Strike allows you to make this attack more times per day than this feat does.