You are capable of exploiting mental links between others and are able to channel your powers through these links to other targets.
Benefit: To use this feat, you must expend your psionic focus. If you are aware of a special mental bond between two entities, you can use that bond to project your powers where they couldn't go before. You may target even a normally invalid target within range when you use this feat; the power will not actually affect this target (your "proxy").
Bonds that can be exploited by this feat include mindlinks, the empathic bond between a wizard and his familiar, a telepath's dominate, or anything else that explicitly allows empathic or telepathic communication (creatures joined in a society mind's worldthought network do not have a direct link to each other, but are directly linked to the society mind). Power by Proxy only operates on powers that specify a single target, that affect creatures other than the manifester and do not require an attack roll.
Using this feat increases the power point cost of the power by 2 The power's total cost cannot exceed your manifester level.