Mental Invisibility (Psionic Power)
Mana: None. Long duration.
  Using this power, the manifester can cloud the minds of those around her, rendering them unable to perceive her presence. This only affects creatures that have a mind and whose Will save modifier does not exceed 5 + your CR. Attacking ends the effect.
   Activating this power costs 2 fatigue points if your Fortitude save bonus is lower that +8, 1 fatigue point if your Fortitude save bonus is lower than +15 and no fatigue if your Fortitude save bonus is +15 or higher.