While most psions are content to focus their study on a single discipline and only dabble in the others, some strive to unlock the secrets of multiple disciplines. These secrets come with a price, for the dual disciple is less skilled in the disciplines he has not chosen as his focus.
Class Features
Discipline
When you choose your discipline, you also select a secondary discipline.
You gain the class skills of only your primary discipline but can select your powers known from your secondary discipline’s power list as well as from your normal power lists.
You may select discipline abilities from both disciplines; however, your effective psion level is considered 3 lower when selecting discipline abilities from your secondary discipline.
When manifesting any power from a discipline other than one of your two chosen disciplines, you suffer a -1 penalty to your manifester level.
Bonus Feats
You lose the bonus feat you would normally gain at 1st level.