This. I think some of the Eldar Gods were Old ones, my bet is on Isha and Vaul. Before the Fall, Eldar were practically gods, Immortal and a lot mightier as they did not have much to fear in the Warp. Even if one did die, he was reborn with all his knowledge, thus i believe that our Gods (or at least some) are nothing more as the first Incarnations of Aspects. Mighty individuals which gained so much Power over the Millennia that they achieved God status. How they gained that Power is up to speculation but i think its a Combination of believe in them as they surely had followers and fusion of souls in the Warp maybe even consumption. The strong have always attracted the weaker.
But then how did they stay gods during the Eldars rule because there was still Chaos so they couldn't just enter the Warp and why would some be called Gods and not all?
I don't find good footing for that speculation, but he is correct about Eldar reincarnation. She didn't exist and the Chaos Gods did not target Eldar souls. The warp was not quite as tumultuous either. Eldar souls did easily pass through the warp and found their way back to new bodies. With no fear of death or permanent repercussion, things can get a little out of hand, as they did... Now, a sense of mortality follows when death means conscious torment at the hands of daemons for millennia until the soul is burnt into an empty husk and cast aside.
yes the warp was a peacefull place before the war in heaven, the old one, have created the chaos, by creating too much warp sensitive race with strong emotion who create turmoil in the warp and then the chaos. the chaos start "small" and get bigger and bigger , the human shaman also reincarnate but at some point they can't reincarnate (something onom soul)and decide to suicide and reborn as the emperor.
As the reincarnation is the natural order of things(suppose that psyker souls were a decent taste for demons at the time) how are Eldar souls reborn? Because if an Eldar dies he/she is settled in a soulstone, or devoured by the Prince of Excess. How do they return? Do souls fly from the bowels of the Chaos God or are they born soulless? Because for some reason I think it is impossible for an Eldar soul to escape the clutch of the Slaanesh.
They're not. In 40k, the soul is more tangible than our real-world assumption of the soul is (for many cultures, in any case). That being said, a person's soul is more of a psychic manifestation of their personality in 40k, they're not automatically there. Also, souls can be annihilated, as is shown with Slaanesh and, more humanly, Horus. Slaanesh in that he/she actually eats the souls as a form of sustenance, and Horus in that his soul was destroyed by the Emperor. As far as 'returning', they don't. It's the whole reason why the Eldar use Soul Stones. So that their souls are not annihilated by being consumed. I'm not sure if it's still modern canon, but the Eldar believe that, ultimately, all of the Soul Stones in all the Matrices across the galaxy will eventually create the Eldar death god, Ynnead, which will destroy Slaanesh and bring balance back to the universe. The only Eldar souls capable of surviving being 'devoured' by Slaanesh are those of certain Harlequins. And that's only because Cegorach, the trickster God, tricks Slaanesh into not eating it in the first place.
^ I can confirm solidzaku's statements up to the 'balance' part. I know Ynnead can potentially kill Her, I didn't hear that Her death would bring any form of balance, just a form of reconciliation with our past through Her destruction.
I am curious about Eldar's relationship with the other Chaos Gods. Their hatred for Slaanesh is well documented, but I can only think of a few times were the other chaos gods got involve. The ones on the top of my head are... Nurgle Capturing Isha Ahrimans ,by extension Tzeentch, quest for the Black Library (which I am not a part off!) I thought I could think another one but I was sadly mistaken
Nurgle holding Isha captive was always a decent part of the old lore, but the 6th Ed. codex indicates that Isha no longer lives in current lore by clearly stating that only Cegorach and remnants of Khaine remain of the Eldar pantheon. I dislike that, so I maintain that Isha is still held captive. What do the Eldar think since they have always clearly believed that she was alive? I'm sure they have some spite for Nurgle, but at least it's orders of magnitude better then Isha being held by Her. If she were alive and that lore rang true, then it is also known that she sneaks out cures for Nurgle's plagues right when they are needed and so her detainment is an unfortunate evil, but one that still has merit. Ahriman? Eh. The Harlequins and Sentinels have his number. Many Eldar don't even know of the Black Library or the White Seers. Only key Farseers know where it is or who to talk to about it and only White Seers, Harlequins and their charges can enter. He'll keep trying, but many of the Eldar are indifferent due to being uninformed. Those in the know probably despise him and are tracking him as best they can.
"As their power and prowess grew, the Eldar soon evolved past the need for physical labor, relying on autonomotons to perform all basic economic functions. Thus on hundreds of Paradise Worlds seeded across the Galaxy, the Eldar pursued their inclinations according to their own will, indulging in every whim and curiosity. This initially allowed for the creation of beautiful accomplishments as the Eldar learned much about the universe which had since been forgotten. At this stage in history, when an Eldar died their soul eventually dissolved peacefully into the Warp to be reborn again. The Warp was not yet a hostile place for Eldar souls, and was inhabited by their own Gods." That's by 3rd and 4th editions.
