OK so first off this was inspired by the 40K Negaverse
here by
@BurnNote, without it I would not be writing this so many thanks for that.
40K Negaverse: Seeking the Way
Mathilde is a Sanctioned Psyker comes from the planet of Stir Secundus, somewhere in the Ultima Segmentum on the other side of the galactic core from Tera. By chance, if that is what you want to call it, she is send back to the planet to aid the newly made Sector Governor Abelheim van Hel is an Inquisitor who was granted Sector Governership for heroic deeds. He too has a history with this place as it was his ancestor who unleashed a blight of Abominable Intelligence upon the sector to defend against an invasion of xenos. Now poor Abelheim is working on a shoestring budget with subordinates of dubious skill, some of them are thieves, some of them are zealots (he does not have a very good impression of the Imperial Cult ever since they refused to send aid for his reconquest campaign) and one of them is a young noble called Anton. The governor sends him looking for mercenaries with some hints that if he were to find some who are not... entirely in the Light of the Emperor that is fine they can redeem themselves. He comes back with the maybe-posibily-we-do not-talk-about-it
sentient Eldari Void Stalker Class Battleship Deathfang dating back to the heyday of the Eldar Empire captained by exiled admiral from Ulthwé, Asarnil. At this point any sector governor who did not also have a bloody rosette would have executed him for heresy. Abelheim goes 'well done Anton, lets kill those AI'. Also since he already has a major xenos asset in his fleet he does not even blink at making a treaty with the
Spakerönde of Zhufbar to burn out the Abominable intelligence once and for all.
Mathilde who has an unusual skill at illusion for a Primaris Psyker uses that to... actually speak Eldari properly, full sensory experience. Admiral Asarnil is so amazed by this that he actually opens up a bit. He is not sharing any deep secrets of the Eldar, but even what little Mathilde reads between the lines is enough to convince her that is there is to be any hope of deafeating chaos it must include the aid of the elder races, the Imperium alone will fall, it is falling all around her day by day.
As though to prove that point Abelheim's campaign ends in tragedy with Mathilde taking up his Relic
Power Sword to defend him and only the forces of Votans and and Eldar ship hanging on at the end. Those Anals of Imperial history that were not utterly redacted would mark this as the forging of a heretic unlike any the Imperium of Man had seen since the days of the Great Crusade. On that battlefield Mathilde would receive Abelheim Van Hall's secret treasure and shame, a man of Iron STC
Now made an inquisitor Mathilde bearing the rosette of her late master would depart for Votans space together with the Space Marine Chapter of the White Wolves which had left their recruiting world for unclear and potentially shameful reasons. Ostensibly Mathilde goes to spy on them and on the strange abhumans, though her mind is on other matters. In the ancient ruined system known only as VAU, playing host to a staggering eight living worlds battle is joined. After a series of psychic and other weird shenanigans during the initial invasion Mathilde would gain the eye and favor of the Laughing God after channeling vast amounts of Waagh energy into a slumbering shrine of the Eldar God that no one had recognized much less used in millennia.
Settling in to her role as chief warp-wrangler, now with the aid of her own divine patron Mathilde would gain psychic insights and hone her mind against greenskins and fouler xenos, the same ones that had prompted Vanhell to unleash the AI upon Stir. Here she would be joined by Magos Johann of the mechanicus with an... unusual interest in xeno-tech, a bevy of other psykers, including the Biomancer Panoramia whom Mathilde would eventually fall in love with. But it was a scouting mission with the aid of Magus Johann that would set into motion the chain of events that would have her lead armies of the Kindred to scour all Eight Planets of xenos and greenskins and in the process discover that the shrine of the Laughing God was not the only Eldari artifact on the world indeed there are more, strange carved stones that show evidence of both Eldari and Kindred work. Once triggered these stones stabilize the local warp to a degree that is unheard of reducing the voices of the warp that every psyker must contend with to whispers of whispers.
The destruction of a massive Ork Waagh with the aid of a psychic station of her own design and the political cover given to her by Abelheim's daughter is one of the few things that ward away an investigation that would be Inquisitor Weber's end yet she is not deterred. Having already learned many of the deep secrets of the Votan from spending so long in a hold of the Kindred, their use of Ancestor Cores, their cloning technology Mathilde is not the least shocked by the evidence of xeno-heresy and neither are those psykers and tech-priests with her. Instead they are intrigued.
That is how they learn that in the depths of the Age of Strife the Leagues of Votan had allied with Craftworld Ulthwé in battle and yet in the creation of these 'waystones' which are a significant part of how the Votan survived. But that alliance is dead, sundered by some great betrayal. Perhaps that is where things would have ended if word had not come from the Exodite world of Tor Laur that they had sensed the awakening of the stones and wished to partner with Spakerönde VAU to rediscover the nature of these ancient works and perhaps reforge them.
Mathilde accepts and so does the Council of Ancestors, more than that she draws the White Wolves into the conspiracy, using their chapter's deep dislike the the Ecclesiarchy's callousness as leverage.
So it Begins.
OOC: I know the White Wolves are kind of shoehorned in there, but there is no way a whole chapter would not notice all the techno-heresy and sorcery going on so they had to come on board somehow.
