I have covered the basics of the lore regarding the following Aeldari factions:
- Asuryani - Craftworld Eldar - The Good Ones
- Drukhari - Dark Eldar - The Bad Ones
- Corsairs - Eldar Renegades - The Space Elf Pirates
- Harlequins - Servants of the Laughing God - Space Clowns
- Exodites - The Fringeworlders - The Dino-riders
And now, the 6th major faction: The Ynnari
More like a new religion among the Aeldari, they are led by an Aeldari named Yvraine. She used to be an Asuryani aspect warrior, then joined in with Corsairs, then fell in with the Dark Eldar, fought in the gladiator arenas and it is here where she was infused with the power of Ynnead - the God of the Dead.
Now... Ynnead, as far as I can tell, was not an Aeldari God that stood in the Pantheon of Asuryan. Asuryan and his Court fell at the Birth of Slaanesh. This event happened around 1000 Years before the Great Crusade of the Emperor and the establishment of the Imperium and caused the warp storms that cut off humanity from Earth with the rest of the galaxy and caused the Age of Strife that preceded the Wars of Unification.
It also caused the Eye of Terror to be created...
After the creation of Slaanesh, most of that once masterful race's souls were consumed in the Chaos God's birth-pangs. Now all Aeldari have bit two(ish) options: Wear a soulstone(Asuryani, Exodites and most Corsairs) and have your soul loaded to the gemstone, or kill things and feed their souls to Slaanesh instead (Drukhari and some Corsairs) and then we get Harlequins who have their own God. Cegorach takes clown souls, except for that of the Soliraite, a enigmatic member of the troupe who represents Slaanesh in their plays. The Laughing God must fight She-Who-Thirsts for that soul each time one dies.
Anyway... We are supposed to be covering this Ynnead character... Well... when you have a Soul Stone, you add it to something called an Infinity Circuit. Turns out that after doing this for 11,000 odd years, that there is so much power that a nascent God is being born in the Immaterium as well as held within the Infinity Circuits.
Yvraine and another mysterious character known as the Visarch now lead a religious group called The Reborn. They seek to fully manifest Ynnead. Right now the God is able to manifest Avatars of itself: The Ycarne.
However, the theory is that when all the Infinity Circuits are full of all the Asuryani and the 5 Croneswords are collected (powerful artefacts) then Ynnead will be born fully and it will be powerful enough to fight and defeat Slaanesh!
However, they only have 4 of the swords and one of them is in Slaanesh's Palace in the Warp... good luck getting that back!
Meanwhile, the Ynnari are still quite powerful. Capable of using the souls of the slain as weapons they have become a new hope for the dying Aeldari race.
Thank you for reading!