Breath Weapon (Su): An incarnum dragon’s breath weapon is a cone of resonating energy that separates incarnum from living matter and deals damage to creatures (but not to objects). Every creature within the area must make a Reflex save or be temporarily drained of essentia.
This effect reduces the essentia pool of each target by a number of points equal to the dragon’s age category for 1 hour. A successful Fortitude save halves both the damage dealt and the essentia drained. The save DC is Constitution-based.