Codex Sanguine
Codex Sanguine is a text created by the Angels Sanguine Chapter that details the process of their Founding, following the death of Sanguinius, and the curses they have inherited from the Blood Angels. There are multiple copies of the text, but only the Chapter's Chaplains and Sanguinary Priests are permitted access to those pages detailing the flaws of the Angels Sanguine's Gene-seed.[1]