From publisher blurb:
Cyphermages are students of ancient history, runic lore, and abominable secrets man was not meant to know. They are respected for their depth of knowledge about history, yet some people find them dangerously stubborn in their pursuit of secrets best left lost, or their borderline obsession with any scrap or fragment of carven rubble. Cyphermages are dogged in their pursuit of knowledge, often secretive not only with outsiders but with one another, as each strives to uncover a forgotten scrap of lore, or present a triumphant dissertation to his peers or to academics half a world away.
Prestige Class: Cyphermage
Build Classes: The cyphermage is primarily built on the wizard, but the following optional classes are described in their own section, below: arcanist, sacerdote, psychic, and witch.