You can use your psionic displacement psi-like ability more often.
Prerequisites: Thri-kreen, psionic displacement psi-like ability.
Benefit: Constant rehearsal and study grant you the mastery required to use your psionic displacement psi-like ability a total of three times per day.
Normal: A thri-kreen’s psionic displacement psi-like ability can be used once per day.
Special: You can gain this feat multiple times. Each time you take the feat, you gain an additional two daily uses of your psionic displacement ability.
Source: Complete Psionic, page 58.