Strength of Two( Complete Psionic, p. 60)
As the host of a formless psionic entity, you possess immense willpower.
Any other host feat*,
As long as you are psionically focused and possess at least 1 power point, you receive a +1 insight bonus on Will saves. As an immediate action, you can expend your psionic focus and spend 1 power point to improve this insight bonus to +5 for 1 round.