Concussive Power [Metapsionic]

Benefit: To use this feat, you must expend your psionic focus. With sonic damage comes a concussive wave of energy that rattles creatures affected by the power.

A concussive power causes creatures that take damage from a power that has the sonic descriptor to take a –2 penalty on attack rolls, saving throws, skill checks, and ability checks for a number of rounds equal to the power level of the power. A concussive power only affects powers with the sonic descriptor. Using this feat increases the power point cost of the power by 2. The power’s total cost cannot exceed your manifester level.

Powers that do not deal sonic damage cannot be used with this feat.