You can sicken creatures with your powers.
Benefit: To use this feat, you must expend your psionic focus. You can modify a power to sicken a creature damaged by the power. When a creature takes damage from this power, they become sickened for a number of rounds equal to the level of the power. If the power allows a saving throw, a successful save negates the sickening effect. If the power does not allow a save, the target can make a Fortitude save to negate the sickening effect. If the power effect also causes the creature to become sickened, the duration of this metapsionic effect is added on to the duration of the power. Using this feat increases the power point cost of the power by 2. The power’s total cost cannot exceed your manifester level. Powers that do not inflict damage cannot be used with this feat.