In addition, there have been comments by both Eliphas the Inheritor and Farseer Taldeer which imply a connection between the Blood Ravens and Chaos. Both chapters have a large number of psykers, as well as a similar color pattern between Blood Ravens and pre-Heresy Thousand Sons. As the fleet-based marines of the Thousand Sons were not present for the burning of their homeworld Prospero and thus were not transported to the Eye of Terror, their fate remains unknown. Some speculate that the Blood Ravens are loyalist descendents of the Thousand Sons. Attempts to link them with the Blood Angels and Raven Guard seem to be due to similarities in their names and heraldy, but the Chapter suffers neither from the Blood Angels' psychotic tendencies nor have the pale skin and black eyes and hair of the Raven Guard. There is much speculation as to which First Founding Legion the Blood Ravens actually descend from. The date and purpose of their founding is unknown but it is speculated that it may have been to confront a specific threat that is now dispatched or in a period of great upheaval in the Imperium that has since been forgotten, or redacted. The Blood Ravens have no knowledge of their original founding Chapter, Legion, and Primarch. There is a minor mutation in the stage 6 implant (the catalepsian node, a brain implant controlling the Marine's circadian rhythm and sleep functions) of Blood Ravens that results in eidetic memory and inability to experience REM sleep. This high frequency of psykers has resulted in increased testing of the Blood Ravens genetic material that is submitted to the Adeptus Mechanicus, but all tests have found their geneseed to be stable with no aberrations. On the surface, the Blood Ravens are a relatively unremarkable Chapter, organized according to the standards set out by the Codex Astartes with little apparent deviation, although they have an unusually high number of Librarians.

Empire of the dawn strike the blood