Cloud Mind, Mass

Telepathy [Mind-Affecting]
Level: Psion/wilder 6
Manifesting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Target: One creature/level
Duration: 1 min./level
Saving Throw: Will negates
Power Resistance: Yes
Power Points: 11
Metapsionics: Extend, Twin

You make yourself completely undetectable to the subjects by erasing all awareness of your presence from their minds.
However, if you attack any creature they becomes fully aware of your presence.