Stridulous Voice
From Activating Evolution
Stridulous Voice is the ability to make one's own voice or the voice of another scratchy and grating, so as to hurt the ears of foes. One with this ability could use it in lieu of a sonic scream, or along with a sonic scream to amplify the damage done, as it would shatter glass and eardrums. One with this ability can usually keep from getting a scratchy throat from it, but if it is used on a subject, they will not.
