Mental Trauma
Psion Attack 1
Ranged 20
Target: One creature
Attack: Intelligence vs. Will
Hit: 3d8 + Intelligence modifier psychic damage
Miss: Half damage
Effect: The target gains vulnerable 5 psychic (save ends)
Mental Trauma is a first-level daily Psion attack power. [PH3:84]
It is considered a weak choice, being only situationally useful if you are targeting an elite or solo and if your other party members also inflict psychic damage.[Charop Psion]