You can use your burst racial trait more often.
Prerequisite: Xeph.
Benefit: You can use the burst ability granted by your xeph heritage a total of three times per day.
Normal: A xeph’s burst 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 burst ability.
Source: Complete Psionic, page 59.