Psionic characters can learn new powers when they attain a new level. A psion can learn any power from the psion/wilder list and powers from his chosen discipline's list. A wilder can learn any power from the psion/wilder list. A psychic warrior can learn any power from the psychic warrior list.
Powers Gained at a New Level: Psions and other psionic characters perform a certain amount of personal meditation between adventures in an attempt to unlock latent mental abilities. Each time a psionic character attains a new level, he or she learns additional powers according to his class description. Psions, psychic warriors, and wilders learn new powers of their choice in this fashion. These powers represent abilities unlocked from latency. The powers must be of levels the characters can manifest.
Independent Research: A psion also can research a power independently, duplicating an existing power or creating an entirely new one. If characters are allowed to develop new powers, use these guidelines to handle the situation.
Any kind of manifester can create a new power. The research involved requires access to a retreat conducive to uninterrupted meditation. Research involves an expenditure of 200 XP per week and takes one week per level of the power. At the end of that time, the character makes a Psicraft check (DC 10 + spell level). If that check succeeds, the character learns the new power if her research produced a viable power. If the check fails, the character must go through the research process again if she wants to keep trying.
Manifest an Unknown Power from Another's Powers Known
A psionic character can attempt to manifest a power from a source other than his own knowledge (usually a power stone or another willing psionic character). To do so, the character must first make contact (a process similar to addressing a power stone, requiring a Psicraft check against a DC of 15+ the level of the power to be manifested). A psionic character can make contact with only a willing psionic character or creature (unconscious creatures are considered willing, but not psionic characters under the effects of other immobilizing conditions). Characters who can't use power stones for any reason are also banned from attempting to manifest powers from the knowledge of other psionic characters. Mental contact requires 1 full round of physical contact, which can provoke attacks of opportunity. Once contact is achieved, the character becomes aware of all the powers stored in the power stone or all the powers the other character knows up to the highest level of power the contactor knows himself.
Next, the psionic character must choose one of the powers and make a second Psicraft check (DC 15 + the power's level) to see if he understands it. If the power is not on his class list, he automatically fails this check.
Upon successfully making contact with another willing psionic character or creature and learning what he can of one power in particular, the character can immediately attempt to manifest that power even if he doesn't know it (and assuming he has power points left for the day). He can attempt to manifest the power normally on his next turn, and he succeeds if he makes one additional Psicraft check (DC 15 + the power's level). He retains the ability to manifest the selected power for only 1 round. If he doesn't manifest the power, fails the Psicraft check, or manifests a different power, he loses his chance to manifest that power for the day.