Editing Idoneth Deepkin (section)

==History==
===Age of Myth===
After [[Teclis]], [[Tyrion]], [[Malekith|Malerion]], and [[Morathi]] made [[Slaanesh]] start shitting out elf souls, Teclis took the devout of [[Mathlann]] (the deceased elf god of the ocean) and made a new home for them in Hysh called Leiriu, a luminescent city also known as the Bright Haven or City of Reflection. There, Teclis taught these newborn aelves, the "Cythai", about the old world and their gods hoping to re-create the High Elves.

However, they weren't exactly model elves: they were withdrawn, resentful and traumatized by their time being Vored by Slaanesh. Upon learning this, Teclis wasn't thrilled with them and tried to find what went wrong. The Cythai weren't cooperative, and gained somewhat of a reason when Teclis' methods made some fall into madness. Afraid for their lives and not willing to <s>go to therapy</s> trust Teclis, they fled into the oceans of the Mortal Realms. Along the way they stole the Ocarian Lantern, an artifact of Teclis that he'd used to draw souls from Slannesh that the Idoneth believed could be used to track them down. Teclis, being a [[Eldrad|dick]] and probably sore about the theft of the lantern, did plan to exterminate them, but his brother Tyrion convinced him to be merciful so he let them go.

The wayward elves used their magic to live in the most secluded place they could think of; under the sea. The magic they learned from Teclis was adapted so they could live underwater, even at the most crushing of depths. They grew attuned to their new surroundings, learning to trust vibrations and changes in pressure more than sight or sound. Some of them even became adept in the art of seeing the flaring soul-stuff that animates the living. Over time, each of the Cythai's enclaves developed differently, but all were affected by their new environs and self-imposed isolation. Since the elves super-PTSD still haunts them, they welcome the way in which the depths numb their senses. If everything is cold and you can't see without the aid of magic and glimmerfish, that's less sensations and emotions, which means less power to their most ancient nemesis.

The elves, now calling themselves ‘Idoneth’, didn't learn that Tyrion had made Teclis cool down and stayed in hiding. Having rejected Teclis they called out to Mathlann, but he was dead so they reached out to other gods, who either didn't hear them, were also dead or didn't care. Eventually they gave up and tried to re-create Mathlann and society as best they could.

After making their new societies, they calmed down and took stock of their situation. Accepting the possibility that their time in Slaanesh had contaminated them, the Idoneth did some research to see if there were any side-effects and found two. The first they called ''mallachi'', when an Idoneth went into a state of raging madness that ended in savage debauchery, but this only happened to a few. The second was far worse, as when they started having babies [[Grimdark|only one in a hundred Idoneth babies survived past infancy]]. The Idoneth soon figured out this was caused by most of their progeny being born with souls that swiftly withered.

Desperate and without divine aid, they turned to magic to fix the problem... [[Grimdark|without success]]. Between the extremely high infant mortality rate, wars and the dangers of the ocean, Idoneth numbers rapidly dwindled. Things only changed when they found out after experimentation [[Dark Eldar|if you kill something with a soul and put that soul into an Idoneth elf, they won't die prematurely]]. They first tried this on animals, but animal souls only brought them days, so they decided to go to the surface and start taking the souls of other people. Though other souls, such as those of human, duardin, orruks and even sylvaneth worked equally well for the Idoneth's purpose, it often took more than a few souls to empower an elf to live even a third of their normal lifespan.

At first it was only for survival, since the withering of souls continued unabated and has so far proven incurable, but later they did it for the expansion of their newly found enclaves. Of the original Idoneth made by Teclis, their numbers dwindled until only one was left - Volturnos. At first it was only one in Hysh, but after the discovery of the '''Whirlways''', whirlpools that work as underwater Realmgates, they started to get into the rest of the realms. Due to [[Skub|differences among the Cytharai]] and a growing population, they expanded to all Mortal Realms save [[Azyr]] and founded several enclaves in all of them. They developed a pattern of swift raids and a strict "leave no witnesses" policy, surrounding themselves with memory-altering magic so anyone who encountered them would forget it soon after if the Idoneth didn't kill or capture them first (and the rare few who managed to escape with this knowledge were written off as lunatics or deluded).

But there were other powers out there so the secret could only last for so long. [[Sigmar]] long suspected that something dangerous was in the oceans, but had other concerns so he didn't go looking. It was Alarielle and the Sylvaneth who first pierced the veil of secrecy. In Ghyran, an Idoneth attack on some coastal Sylvaneth drew the attention of [[Alarielle]], who entered the fray and personally defeated them in battle. Since Alarielle is a goddess, she's immune to their memory-altering magic and her word is all the Sylvaneth need to be on guard against the Idoneth.

The Idoneth became quite the hikkikomori: betrayed by their creator, forced into bad habits for survival and hated by many.

===Age of Chaos===
While the Sylvaneth kept the secret, the Idoneth dialed back their attacks and kept a low profile in Ghyran. On the Chaos side, the [[Keeper of Secrets]] Sslish the Depraved followed the spoor of strange magic and eventually found an Idoneth army, attacking them with a daemonic army until an Eidolon destroyed them. [[Archaon]] had long suspected there were more aelves than would seem, but wasn't able to confirm this until his Gaunt Summoners found the same magic and scried, finding and binding Sslish before Archaon tortured the daemon into spilling the beans.

But the Idoneth thought that they didn't need the surface world and limited themselves to the oceans, leaving only for raiding souls. During the Age of Chaos this started to change. They fought the forces of Chaos wherever they found them, either leaving Chaos' other opponents alone or killing them and taking their souls too. High King Volturnos realized that they'd have to ally with others to fight off Chaos though most other Idoneth didn't approve of this. First, he reached out to Alarielle for peace talks but, wary of trickery and aware of the Idoneth's past actions, Alarielle turned them down. They also encountered some Stormcast Eternals, and after a battle where the Idoneth learned they're unable to capture Stormcast souls due to Sigmar's blessing, they found new allies in the Sigmarines.

===Malign Portents===
They also have kind of a big issue with [[Nagash]]. Nagash knew about the disappeared souls from the get-go and is kind of territorial in regard to the dead. Even worse was when the Idoneth in Shyish altered their magic and used it to harvest long-dead souls from afterlives or those of undead beings. Because they're stealing souls to save themselves, Nagash is not happy with them (read: ''REALLY hates them and put them on his genocide list'').

At first, Nagash had no idea who was taking the souls or where, despite extensive searching on his part. After the accidental drainage of a sea in Shyish (''How the hell do you drain a sea "accidentally"?!'') by the [[Skaven]] (''...oh, THAT's how. Even better, [[Thanquol|everyone's favorite Grey Seer]] was responsible.''), [[Nagash]] caught on to their existence and location. In response, he started emptying more seas in Shyish and sending waves of undead after the Idoneth to stamp them out because he’s the only guy who believes himself to be allowed to have dead souls.

In their desperation, the Idoneth of Shyish changed their foreign policy and allied with the Forces of Order. Around this time, some Idoneth got so desperate they somewhat reconciled with their estranged creator-god Teclis. At least, enough to fight alongside him and their Lumineth brethren in battle.

===Broken Realms===
In Broken Realms: Morathi, the titular character sent a force into the Idoneth's temple to steal the Ocarian Lantern they'd stolen from Teclis. Despite her success, only two of the sixty warriors Morathi sent survived, one of them because they were captured by the Idoneth. The Idoneth interrogated the captured Khainite, and learned of Morathi's plans. The Idoneth flipped out and had a council of monarchs, fearing that if an enemy got their hands on it, they could use it to find all their Enclaves and thus wipe out their race. Volturnos declared war on the Daughters of Khaine. He gathered forces from every Enclave and attacked Hagg Nar with a massive army.

Despite fierce resistance from the Daughters of Khaine and their Scourge and Freeguild pirate allies, Volturnos and his elite guard reached the ritual chamber but were too late to prevent Morathi reaching godhood, though Volturnos helped damage the Mathcoir, Morathi's cauldron of blood. The newly ascended Morathi-Khaine defeated Volturnos' forces, pinned him to the floor and offered an alliance, giving back the Lantern as well as a lot of lost Cythai souls as a peace offering. Volturnos, wary despite his joy at being reunited with his fellow Cythai, allied with Morathi and withdrew his forces. Together, the Idoneth Deepkin assisted in Morathi's conquest of Anvilguard, but neither trusts the other, so it's not a question of "if" their alliance will break, but "when".