Illithid Blast
(Complete Psionic, page 61, DnD 3.5)
[Heritage]
You can convert your psionic energy into a mind blast.
Prerequisite
Illithid Heritage*, two other illithid feats, manifester level 5th
Benefit
Once per day as a standard action that requires the expenditure of your psionic focus, you can channel power points into a mind blast, which is a psi-like attack in a 15-foot cone. Anyone caught in the cone must succeed on a Will save (DC 10 + 1/2 your HD + your Cha modifier) or be stunned for 1d4 rounds.