Editing Order of the Obsidian Mirror (section)

===Origins===
[[Image:Obsidian Mirror.png|thumb|right|300px|A [[Battle Sister Squad|battle sister]] of the Obsidian Mirror]]
The seeds of what would become the Order of the Obsidian Mirror began with a joint venture between the Order of the Ebon Chalice and an Order Dialogus known as the Order of the Sacred Oath. The Order of the Ebon Chalice was involved with several campaigns as part of the Agrippa Crusade, and required the aid of the sisters Dialogus in order to properly coordinate communications between the various preceptories across the sector. This was accomplished through the use of sisters dialogus that accompanied each force as well as specially-selected battle sisters who could be relied upon to provide concise reports of each engagement.

As the campaign ground on, several discrepancies became apparent to the sisters involved with this venture. While the crusade was well-led on a tactical level, on a strategic level, it was rife with inefficiency and poor strategy. The man in overall command of the crusade, Chapter Master Agrippa of the Omega Serpents chapter, seemed to be directing Imperial forces directly towards heavily fortified enemy zones when other, even when other, more strategically viable attack vectors were available. In addition, there were scattered reports among Imperial forces of teal and silver-armored Astartes moving behind enemy lines, seemingly unconcerned by the fighting.

In the face of this knowledge, Canoness Donatica launched her own clandestine operations to discover the truth. Redeploying the battle sisters and dialogi under her command into specialized infiltration teams, she sent her forces behind enemy lines to uncover the truth. Whatever forbidden knowledge they discovered in these nighttime raids is uncertain, but it was enough for the sisters involved to break away from their respective orders and form the Order of the Obsidian Mirror. Ever since that fateful campaign, the sisters of the Obsidian Mirror have hunted the Alpha Legion across the Eastern Fringe, waging a deadly shadow war that few outside of the Order ever hear of. In order to combat the masses of cultists employed by their enemies, the sisters of the Obsidian Mirror have become masters of psychological warfare, utilizing stealth, precision, and raw terror to subdue their foes. Any who survive are swiftly imprisoned for interrogation by the sisters dialogus, who expertly extract information from the unwilling.