Codex of Rigal

From the introduction: Tyresius has a book that tells of a powerful device that was used by the Elven Armada to fight off illithids and to control some of them as slave stock. The Rigal family of the ’ixmuzala clan were in charge of all magical and scientific experimenting and tried to breed mind-flayers with humanoid stock found on Freeden. Their goal was to design a decent anti-illithid shock troop. User summary: For high-level characters.