Stygian Archon

(Complete Psionic, page 57, DnD 3.5)

[Psionic]

You sear the synapses of your mind with a scar of void and emptiness. From now on, psionic powers you manifest that utilize negative energy are more fully tied to the Negative Energy Plane.

Prerequisite

Know two powers that utilize negative energy

Benefit

To use this feat, you must maintain your psionic focus. When manifesting a power that utilizes, disrupts, or detects negative energy, your manifester level is treated as one higher than normal.