" Zeus gathered all the useful things together in a jar and put a lid on it. He then left the jar in human hands. But man had no self-control and he wanted to know what was in that jar, so he pushed the lid aside, letting those things go back to the abode of the gods. So all the good things flew away, soaring high above the earth, and Hope was the only thing left. When the lid was put back on the jar, Hope was kept inside. That is why Hope alone is still found among the people, promising that she will bestow on each of us the good things that have gone away. "
- – The myth of Pandora, Aesop's Fables, sounding suspiciously similar to the fall of the Eldar
The Ynnari, also known as the Reborn, are the youngest splinter faction of the Aeldari race, born during the events of the Gathering Storm as a means of advancing the eldar's storyline. They gather all kinds of eldar in the belief that their species can be saved from oblivion and eternal torture at the hands of She Who Thirsts by giving birth to the Eldar god of death, Ynnead. They've had a massive impact on the lore recently, mainly by helping Our Spiritual Liege wake up from his millenia power nap and get shit done.
Crunch wise, it allows players to use every single unit under the eldar faction into a single army, and I mean EVERY SINGLE FACTION. This has caused massive buthurt due to the amount of tears such broken combination causes on a regular cases. And of course, this will drive eldar sales up once again.
The beginning: Eldrad does a thing
The Ynnari first appeared during The Gathering Storm, although the seeds of their formation should be traced back to a certain dick. After having some sort of vision of the future, he decided to try and force the birth of Ynnead manually, rather than waiting for the whole species to die. To that end, he pillage and stole the mortal remains of some of the most powerful eldar seers and organized a ritual on a derelict moon close to the Eye of Terror. Unfortunately for him, he was discovered by a Deathwatch team, who figured that a xeno taking some ultra powerful psykic relics to try and create a god was bad news, and assaulted them in the middle of the ritual. The resulting battle was so intense that blew up the moon, or maybe it was the effect of the ritual failing. Nevertheless, Ynnead was born, although it was in an infantile state, with only a fraction of his power available for it. So it started searching for someone that could help it regain power...
Meanwhile at Commorragh
At this point in time, the eldar Yvraine was having the fight of her life in the grand colisseum. And I mean of her life, considering she lost a hand, got stabbed in the chest and was on the brink of death while having to fight tyranid bioforms, wyches and fucking Lelith Hesperax herself all at once. Just before she died, Ynnead detected her presence and judged her as adequate of being its emissary due to her having walked all paths of the eldar. The sudden rebirth of Yvraine caused the Gates of Khaine to momentarily break, and the Dark City started getting swarmed by daemons. This resulted in all kinds of Scooby-Doo hijinks, but let's just say that Yvraine was able to get away from Commorragh while Vect swore revenge against her and all those allied to her. She and her group were rescued by harlequins, who brought her to the craftworld Biel-Tan.
The fracture of Biel-Tan and their visit to Cadia
After finally reaching "friendly" territory, Yvraine and her gang, now called the Ynnari, tried to decide their course of action, though not before having to deal with a teensy-tiny problem of a full daemonic invasion leaded by Skarbrand and The Masque. After that was out of the way, they decided that to follow Ynnari's plans, they would need to increase its power, and to do that they were going to need the Crone Swords, many of them were on Biel-Tan already, so that's a lucky stroke. Though, all of this talk of resurrecting a god of the dead and taking some of the most valuable relics of eldarkind kinda pissed half of the inhabitants of Biel-Tan, while the other half thought Yvraine was
hot really the last hope of the eldar race. Thus, the fracture, with half of the already reduced population going with the Ynnari.
This was also happening at the same time as Abaddon was having his latest rage fit at Cadia, only this time successfuly. Figuring that the Imperium was the only faction that would help fighting Chaos, they decided to aid them, trying to stem the black hordes and helping imperial forces evacuate, once it's clear that Cadia is lost. Thus, they decided to go with another plan...
Yvraine helps resurrect Guilliman
With Cadia lost and the Cicatrix Maledictum unleashed, Yvraine had to reunite with the terrific trio to see what was the next plan: none other than trying to resurrect a primarch millenia preserved in stasis, poisoned by chaos stuff and on a planet currently under siege. Against all odds, the combination of Cawl's bullshit technologies alongside Yvraine's eldar magics managed to wake up Roboute Guilliman, who immediately started kicking ass and taking names of the Black Legion. This caused every chaos god to freak out, and try to keep Bobby G to reach Terra. luckily, with help of the Ynnari forces, certain Dark Angel and the Custodes & Sisters of Silence combo, they managed to reach Terra. It is here that Yvraine and Guilliman say farewell to each other, leaving in terms friendly enough to make people consider the chance of love blooming in the battlefield.
After the Gathering Storm
The Ynnari have been busy enough. From trying to recruit as many eldar as possible, to exterminating a whole craftworld infected by genestealers and stealing their Avatar of Khaine, to continue the search for the last Crone Sword
(Farsight has it though) to help Yvraine's friend with benefits clean Ultramar from Nurgle and Morarion, they have caused a massive impact in a very short amount of time. Half of the eldar now think they are the last hope for the race, while the other half thinks they are heretics and they bring curses and death wherever they go.
Notable Characters and components
The Ynnari is a faction full of characters. Seriously, look at the list.
The Big Three:
Craftworld Alaitoc Eldar
And let us not forget the ENTIRE CRAFTWORLD of Altansar and Iyanden, about half of Biel Tan, a third of Ulthwe, and a bunch more shall we?