Greater Psionic Endowment
(Expanded Psionics Handbook, page 47, DnD 3.5)
[Psionic]
You can use meditation to focus your powers.
Prerequisite
Psionic Endowment
Benefit
When you use the Psionic Endowment feat, you add +2 to the save DC of a power you manifest instead of +1.