This is a SRD category for Psions. Note Birthrght canon does not include psionics - when the game was designed it was felt that it was 'busy enough' with bloodlines and so on. This does not mean however that psionics are unknown in Aduria or other continents, or could not be present in the Shadow World for example, similarly Birthright canon is hazy over whether an Underdark exists. Non-purists can of course simply ignore canon in this area if they wish.
