Shadow
Shadow is a supernatural force that is superficially similar to, but altogether distinct from Magic. The primary difference is that Magic works within the metaphysical bounds of the Universe, while Shadow works around them, the latter requiring a considerable application of will. In a glib interpretation, the theory behind Shadow power is that, as long as nobody is paying attention, you can get away with anything--the key is ensuring you aren't seen, and, more problematically, making sure you yourself don't really notice.
Shadow power is based, in a way, on belief. The practitioner must believe he or she can violate the laws of physics. And, no one else who happens to believe in those laws can see these violations, or their own belief will cancel them out.
You gain the Shadow power source by taking the Borne Unto Shadow feat.