Blood Ravens - Blood Ravens Librarians: Like their fellow Adeptus Astartes Chapters, the Blood Ravens also maintain a Librarium of potent psykers who are highly talented and trained to master the power of the Warp at the highest levels. Each Chapter selects its Librarians in its own way, either from seed worlds, as it does with the bulk of its initiates, or from the ranks of gifted adolescent male psykers brought to the Scholastica Psykana of the Adeptus Astra Telepathica by the Black Ships of the Great Tithe.The Librarians of the Chapter also fulfill a number of more secretive and specialised roles, including stewardship of the great Librarium aboard the battle barge Omnis Arcanum, and the Secret Orders of Psykana who maintain the Sanctorium Arcanum aboard it.The Omnis Arcanum serves as the Blood Raven's mobile fortress-monastery as it is the largest battle barge within the Chapter's fleet. The Chapter's Librarium Sanctorum, the majority of which is kept aboard the Omnis Arcanum, contains countless scrolls, tomes, electronic storage devices and computational engines that store the Chapter's records, roll of honour, and the ancient -- and often forbidden -- lore that they have recovered during their ongoing research.The path to becoming a Space Marine is long, arduous, and fraught with peril, but it is a more straightforward path to tread when compared to the hardships an aspirant must endure to become a Librarian. Deadly trials and terrifying ordeals that test an aspirant's strength of will, character, and psychic resilience are necessarily harsh to ensure that the potential Librarian has the power to resist the predations of Warp creatures and aetheric entities that inhabit the haunted depths of the Empyrean.Those who fail in such endeavours usually either die in agony during the testing or are swiftly executed as potential conduits for possession by Warp entities. But there are others who fail in their testing but are so ravaged by it that they are no longer sane or, in some cases, even humanoid in form anymore. These poor, unfortunate individuals are taken in pentagrammically warded chains to a shuttered, lonely place on the Omnis Arcanum known simply as "the Tower," where they are studied by the Chapter's Librarians to better understand what makes an aspirant fail to join the Librarium and how they might better hone and prepare the minds of others who take the trials.The Tower is a horrifying place, echoing to the sounds of lunatic screams and shunned by all save those who must brave the soul-destroying terror of those condemned to this place. What happens behind the locked and warded doors of the Tower is never spoken of, but there are dark tales of beasts conjured from beyond the veil and briefly allowed to manifest in the flesh of those incarcerated within the Tower, before being banished back to the Warp. The veracity of such tales is suspect -- to say the least -- but were they proven true, they could potentially be the Chapter's undoing.Blood Ravens Librarians have a number of unique psychic abilities only used by the psykers of their Chapter:Battle Sight - Blood Ravens Librarians can pierce the fog of war with a thought, casting their mind far and wide across a battlefield, world, or even star system for hints and clues to the movements and deployments of their enemies that may have gone undetected by more conventional technological means. A Librarian may use this psychic power in two different ways, choosing its application before he manifests it. The first application is to gain an immediate tactical edge in combat and is most useful when facing immediate battlefield threats. Used in this way, Battle Sight reveals the position of all enemies within range that have hostile intentions toward the Librarian (i.e., intend to do the Librarian harm). This does not track the movements of these enemies or their actions, but simply informs the Librarian of their presence, direction, and distance from his current location. In addition to revealing foes, this power allows the Librarian to see through cover and concealment when making attacks against enemies revealed by Battle Sight. The second use of this power is to gain a broad strategic overview of an area and information on how better to complete a mission or overcome a foe.Truth Seeker - Blood Ravens Librarians spend much of their lives seeking knowledge and looking into the origins of their Chapter by sifting through the secrets of the past. Truth Seeker allows a Librarian to find details and clues that he might have otherwise missed, drawing his attention to areas or objects of interest.Warp Whispers - The Librarian can listen to the babblings of the Warp and perceive the secrets of its denizens, sifting through the noise and maddening chatter to find grains of truth. It is a practise not without peril, however, and many Librarians dare not even attempt such follies, though those of the Blood Ravens know that true knowledge can never be gained without a degree of danger.