Enduring Psionics (3.5e Feat)
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Enduring Psionics [Psionic]
Your psionic powers last longer than normal.
Your gain a +1 bonus to your manifester level when determining the duration of powers you manifest whose duration is directly affected by your manifester level (such as astral construct).
You can take this feat multiple times. Its effects stack. Whenever you take it, the bonus to your manifester level increases by another point.