Intensify Power (3.5e Feat)
From D&D Wiki
Intensify Power [Metapsionic][Epic]
Combines the effect of Empower Power and Maximize Power to maximize and double a power's potency.
Prerequisite: Empower Power, Maximize Power, Psicraft 30 ranks, ability to manifest 9th level powers.
Benefit: All variable, numeric effects of an intensified power are maximized, then doubled. An intensified power deals twice maximum damage, cures twice the maximum number of hit points, affects twice the maximum number of targets, and so forth, as appropriate. Saving throws and opposed rolls are not affected. A character can’t combine the effects of this feat with any other feat that affects the variable, numeric effects of a power. Using this feat increases the power point cost of the power by 8. The power's total cost cannot exceed your manifester level.