Altaïr Ibn-La'Ahad's Codex

"All right, let's see it....ah ha! Found another one."

- Leonardo da Vinci

The Codex was a thirty-page book written by Altaïr Ibn-La'Ahad following the death of Al Mualim, that document his explorations into the Piece of Eden he possessed; as well as offering an auto-biographical view of his life and depicting various assassination-related articles. The Codex remained within the Order of Assassins until the time of Domenico Auditore when, being sought by the Knights Templar, it was broken apart and lost.

The assassins then attempted to bring the pages of the codex together, but by 1476 were successful in locating just six pages. In this year however, Ezio Auditore da Firenze took up his father's duty as an assassin and, by 1499, had succeeded in locating and bringing together all thirty pages.

The Codex also held a prophecy that predicted the arrival of "a prophet" who would bring together two Pieces of Eden and open the Vault.