Editing Librarian (section)

==Ranks==
Among [[Codex Astartes|Codex]] compliant Chapters, the ranks of the Librarium are based on their level of training and advancement. They are as follows:

*'''Chief Librarian''': The head of the Librarium, and the most powerful psyker in the Chapter. He is also one of the masters of the Chapter and usually a senior adviser to the Chapter Master. On the tabletop, Chief Librarian is an upgrade, letting you cast and deny one more time and know one more spell. You can even take it if you otherwise have a named Character like Mephiston.
*'''Epistolary''': The highest rank below Chief Librarian, Epistolaries serve as the main communication aides on the battlefield, sending psychic messages through the Warp to their brothers in the Librariums, similar to Astropaths, but without having their eyes burned out. On the tabletop, this is your basic Librarian, ables to cast two psychic power and deny one per turn.
*'''Codicier''': Mid-level Librarians, who evaluate reports from campaigns and document them in their Librariums. Used to represent the basic ML1 Librarians in older codices, though they've been phased out on tabletop around 8E.
*'''Lexicanum''': Entry-level Librarians, they are responsible for compiling battlefield reports for the Codiciers. Interestingly, they don't wear psychic hoods, or even helmets unless in dangerous environments. Haven't been represented on the tabletop since 2nd edition, when they were WS/BS4 W1 A1 Ld8 and a psychic power.
*'''Acolytum''': Librarians in training. Brought in from the battle companies before or shortly after they leave the Scout company, they're tested for psychic potential. It's possible that the Acolytum may be killed in the process, but that's life in a Space Marine Chapter for you. If they survive they're enrolled in Introduction to Mind Bullets and How Not to Melt Your Head 101.