Thought to once be human, Aesthers were an intellectual society that delved too deeply into their studies of trans-planar travel. Something went horribly wrong.
They now live an eternal existence trapped between the planes, forced to forever witness infinite realities at once. Aesthers stay out of the mundane goings-on of the other races and interact as little as possible. Their thirst for knowledge, however, is insatiable, and are willing to use their powers of shifting reality to further this pursuit. With the proper concentration, they can summon anything imaginable into existence.