Asuryani - The Dathedian: Towards the end of the 41st Millennium, the galaxy was all but split in half by the Great Rift. To the Aeldari it was known as the Dathedian, and as a highly psychically attuned species, the aetheric phenomena that accompanied it affected them most of all.The Cicatrix Maledictum, that great tear across the fabric of time and space, has further divided the fractious kindreds of the Aeldari species. After the coming of that celestial cataclysm, the Aeldari craftworlds sent out psychic communiques, reaching out to one another across the void. Two of the world-ships did not respond, their spiritual traces dwindling with every passing hour. Some amongst the Spiritseers of the Asuryani believe their souls have empowered Ynnead, the god of the dead, and that those craftworlders will never be seen again.To a stellar empire as large as the Imperium of Man, this would have been considered acceptable losses, for Humanity's realm contains a million worlds and more. For the Asuryani it was a cost so high it wrenched at the heart. Perhaps one day the lost craftworlds would return, just as Altansar was drawn from the gullet of the Warp by the odyssey of the Phoenix Lord Maugan Ra. But for now, they were gone.Far from uniting the survivors against the tide of Chaos spilling into the galaxy, that great loss fomented discord, and the rift between the factions of the Aeldari grew all the wider. Simple geography was itself a contributing factor, for the craftworlds were too far scattered across the galaxy to easily unite, and even the Aeldari paths through the Webway -- that maze of metaphysical pathways that spanned the interstice between realspace and the Warp -- were now battered and torn at by the raging fury of the empyrean.Though the Harlequins continued to walk that strange unrealm at will and do what they could to unite the Asuryani and Commorrite Drukhari in purpose, the resentment and isolationism that had long characterised the fractured Aeldari species only worsened.In the cultural hearts of the Aeldari peoples, the wound of the Dathedian festered in silence. No civilisation could look upon a sky mauled by the Warp-stuff of Chaos and not feel affected by it. To a people as sensitive to psychic energies as the Aeldari, the scar in reality was a constant dull ache in the mind, a reminder of all they had lost.Perhaps it would never have existed at all were it not for the formation of the Eye of Terror, born from the sickening cataclysm of Slaanesh's birth. Across the galaxy, nightmares of guilt, doubt and surging aggression wracked Aeldari and Drukhari alike, and they steeped themselves in battle against tides of Chaos-worshippers in the hopes of assuaging these negative emotions.A new era of war began as the turmoil within was turned into merciless strikes against ancient enemies, emerging foes and former allies. Much of the blame for the disastrous events was put at the door of the rapidly growing Ynnari movement and, by association, upon Biel-Tan.There, the populace had been divided between fervent support for Yvraine, the leader of the Ynnari, and the outright condemnation that followed her visitation -- coinciding as it did with the subsequent invasion of the craftworld by a ravening Slaaneshi horde and the fracturing of its Infinity Circuit.Amidst that appalling catastrophe a new strand of fate was revealed, one that some believed would lead the Aeldari race to greatness once more. The being that Yvraine summoned from within Biel- Tan's broken wraithbone skeleton was an Avatar, of a sort, and its very existence was proof of Ynnead having stirred from his slumber. There was a chance that the Whispering God could save their souls from She Who Thirsts once and for all.