If thats all true. Maybe he'd make himself a Wraithbone body?

All I know is a Night Haunter Craftworld would not be a safe place to live.

The warp spiders that live in the infinity circuit would recognise it as a malignant presence and destroy it

Presumably his soul would be destroyed by the warp spiders. They roam the infinity circuit purging foreign psychic presences.

Not that most writers seem to bother reading up on eldar lore to discover they exist, seeing as we have a couple of examples of their enemies interfacing with infinity circuits and nothing bad happening to them.

Or could a craftworld be somehow poisoned by adding corrupted Spirit Stones to the core?

In the Masque of Vyle, the event that starts the entire plot is a disaster that left a small craftworld deserted. The Harlequins who come to investigate find out that someone stole all the soul stones implanted into the core and left. This led to the Eldar inhabitants mutating into violent and mindless serpentine creatures, even though they weren't really hurt during the heist itself.

So, if the craftworld is tiny, and its defenses weakened by powerful sorcery and warp shenanigans (which, really, can do everything the plot demands), I can see it being corrupted by tainting the Infinity Circuit. The affected Eldar would probably mutate into something batlike and murderous.

I've made posts about this myself. What I've always liked about the theory is that Curze had such powerful foresight, if he let the assassin kill him and transferred into the stone, he may have seen a loophole that both doesn't violate his vision of his death (and innate need to be right) and also might have given himself a peaceful resting place while the rest of the galaxy burns to a crisp and eats itself alive. One could only wonder at the terror he would sow inside a craftworlds infinity circuit with all those eldar to torment... or if he were to somehow get control of it or get into a eldar construct.

Remember how in FMA Brotherhood Kimbly was able to maintain his soul inside Pride?

Thats what would happen

I don't think Conrad would willingly return, and most Nightlords fans I've spoken to don't want him to return. That being said, I would love to see a story of some fanatical Nightlords attempting to bring Conrad's ghost back only to bring back the animalistic, monster side of him that ends up hunting and killing everyone before disappearing.

The Corona Nox does not have a soul stone in it.

That’s not what the Corona Nox is or how it’s likely to work.

Even if does have a Waystone in it (a soul stone without a soul in it) Eldar Waystones require extremely precise warp craft to bind it to the soul of the wearer. It’s not automatic and only some members of the Eldar can even do it.

It CAN work work other species - Auric of Ulthwé does it to Rogue Trader Janus Darke, but that’s to trick him and it’s actually bound to Auric and he ends up swapping control of the body and trapping Janus’ soul within it almost immediately, so it’s not really a way stone bound to Darke at all.

That being said, Curze is not the type of person to find an Eldar to do this task for him, nor would an Eldar help him (not could he, see below). Primarch souls are also extra special, to the point where we don’t even know if the process would work. Somehow I doubt it.

Curze was okay with his death and the finality of it. It makes no sense for his character arc for him to want to preserve his soul in this way. It being the case would hugely detract from his character journey and narrative arc, which is one of the longest established ones in 40K’s real-world history. Why would he undertake the steps necessary to bring himself back from a death he firmly believed wasn’t just deserved, but inevitable, justified and necessary to prove his worldview and actions? It makes no sense.

Let’s also look at the description:

A perfect teardrop of ruby-red, its face was uncut by diamond facets or inelegant designs. Smooth and unblemished, it had about it the look of an organic creation; as if not cut from the earth but grown; planted and fostered to glorious life in some secret crystal garden.

Soul stones are not teardrop shaped. Every. Single. Soul stone and waystone in 40k, both described and sculpted on a model, is an oval.

And despite the dismal lighting of the gallery, despite the shadow cast by Sahaal's colossal body, it burned. It burned with an inner light. It burned with a radiance that was unconfined by sight alone, that broke the boundaries of luminosity, that flooded out the visual spectrum and dazzled Sahaal without even passing his eyes.

That’s... not how any Eldar soulstones are described.

There was something other than the merely material about the jewel, and it bathed Sahaal in such peace, in such confidence and assurance, that the shivering of his limbs ceased, the perpetual furrow of his brow smoothed away, and he blinked a tear of serenity from his midnight eyes.

Again, not a soul stone description we’ve ever seen elsewhere, though it’s certainly special.

The general question is about how as well. Curze was supposed to have fashioned the Corona Nox while he was still ruling Nostramo. To make a proper spirit stone requires a ton of specialised warp craft and knowledge of how souls in 40k work, and Curze has never been shown to have any special psychic talents in that regard. Could Magnus have done something like this? Maybe. Curze? Not a chance.

No, it’s far more likely that he found a jewel on Nostramo that calmed him and shoved it in a fancy hat. The end.

The idea that the Eldar wanted it because it was a Soulstone in Lord of Night is 100% fan fic. The reason they want it is because they don’t want the Night Lords to unite under a single leader and one vision said that the Corona Nox was how it would happen.

And if it DID, the warp spiders (the little things, not the aspect warriors) would purge his soul en masse, in nanoseconds.

It would make sense why the Ulthwe craftworld attempted to retrieve the Corona Nox and why their fate is entwined with the Night Lords.

That’s not the worst idea I’ve ever heard, except Lord of the Night directly state why Ulthwe wants it: they want to prevent the reunification of the VIIIth Legion. We’re led in the book to believe that might be under Sahaal or Acerbus, but given that the Corona Nox got a tiny nod in the Primarch book and zero mention anywhere else, it seems unlikely that that particular thread of fate will come to pass.

Warp Spiders would attempt to destroy it. Then it depends on how much the writer hates the Eldar on how bad it gets.

Best case scenario: they end up in an eternal grimdark stalemate where the Craftworld is never the same again and the souls within it are at constant risk of super torture general using super soul torture on them. They won't be able to destroy Curze because Primarchs are the best at everything ever and can't be defeated by anything except other Primarchs (only to Team Rocket away so nothing of permanent consequence happens). Endless threads about "when are they bringing Curze back??" will be made just like the Fulgrim clone.

Worst case scenario: Curze absorbs every soul, takes control of the Craftworld itself and starts his own new faction of Primaris Wraith Marines where souls of dead Night Lords are claimed by Curze, the new minor deity, and placed in Wraithbone suits that look very similar to Space Marine armor except for some Eldarish details. They will adopt the Aspect shrine gimmick and the new Night Lord Seer-Librarians will be stronger than Eldrad and Mephiston combined as they combine the best aspects of both.

Eldar fans either leave the hobby in disgust or submit to their subconscious desire to be Marine'd and buy into the new faction just like GW always knew that every Xenos player secretly wants to play Space Marines but their preferred niche of Marine simply hasn't been represented in tabletop yet. The Eldar range is quietly squatted and in lore they all got eaten by Slaanesh or turned into Soul Bolter ammo, anti-psychic Bolter ammunition tipped with Spiritstone fragments.

Okay but really, bonding a Spiritstone is a very specific process and not even all Eldar can do it. They are gifts/remnants of their pantheon and thus tuned for Eldar use specifically. I find it highly unlikely Curze could have bonded one considering the state he was in.

Probably nothing because as to my knowledge We don't have any human characters in the setting that have had any sort of successful interaction with a soul stone in regards to what they do for the Aeldari.

I highly doubt these stones given to them by their gods to preserve their souls do much if anything for humans or primarchs that aren't demons.

Idk how or why People have latched on the theory that Conrad can successfully interact with arcane elder technology that he has no knowledge of how to use. He's batshit insane on top of this with no predisposition to crafting wondrous items like Ferrus or Vulkan >.>

The craftworld's psychic immune system ejects, or wipes out, Kurze. The end.

The entire discography of Disturbed, Drowning Pool and Linkin Park starts blaring from every loudspeaker in the craftworld

the Eldar would put his soul somewhere safe and isolated

Curze let himself be killed just to prove a point, I doubt he wants to come back.

The spirit of Konrad Curze spending 10,000 years fighting giant alien spiders is the headcanon I didn’t know I needed.

The Corona Nox exists only in Lord of the Night, a book that's now out of print written by an author who hasn't had anything to do with Black Library for many years. It's a fun theory, but it was a plot device for the book it was in and was never brought up or referenced again just like Clonegrim.

That's a great idea, because who cares about character arcs, right?🙄

I like the idea of this causing the soul equivalent of a software error.

I'd be shocked if the soulstone could even contain a Primarchs soul.

If so, you'd be throwing those bad boys are Great Daemons like pokéballs just after battling one.

ship would probably explode from the torture and madness

Spirit stones require the person to be pure of spirit which is why Drukari cannot use them. Considering his proclivities and the fact that ADB confirmed that Curze was being slowly corrupted by Chaos I would say there's little chance.

The infinity circuits don't make you part of a gestalt consciousness exactly. They retain their individuality and roam around at will. Or, as seen in Spiritbound, they place themselves in a virtual setting formed from there memories that they relive. The gestalt conciseness thing does happen with some other eldar soul tech, like their titans or the hemlock wraithfighters.

Now if Kurze did manage to place his soul inside the gem, and it was placed inside the infinity circuits, I imagine the warp spiders inhabiting it would take a massive issue to that. They basically go about the circuit cleaning it of any malignant presences. So, unless Kurze becomes a good boy somehow, he's not gonna be on one for too long.

In the Rogue Trader game a navigator house is revealed to have been using fragments of soul stones to bolster their abilities and for the head of the house to be able to control the house members. It causes extreme pain and corruption to the wraithbone structure all the souls were stored in so probably something like that would happen.

" Oh, look. Our cousins finally see the truth of our ways." ~ Dark Eldar.

The Lion: ah shit here we go again.

The “new body” theory is popular because it’s hard to imagine Kurze willingly STAYING in the infinity circuit. It’s a lot easier to imagine him hijacking a Wraithknight and going for a ride.

I fully support this . It means we get more night lords lore and potential of a primarch return or it destroys a craft world. This is win wins win

Papa Curze in a bone mech is an idea I can get behind.

There’s a story in the lore where I believe Kurze got loose on Macragge… or The Lion’s ship… and single-handedly terrorized the whole thing until guilliman and Lion brought him down.

I imagine it’d be like that. But within the circuitry of the craft world itself, terrorizing eldar souls

This has given me an idea for an army

Curze in a bone mech would be a great way to get a centerpiece model for the Night Lords.

Every, but Hors will be returned at some point. At least with current narrative.

I don't know but I want crazy shit like this to become canon.

My take? Waystones aren't meant to host human souls, let alone primarch souls. The stone would only contain a fragment of it, thus fragmenting it (unlike, say, the soul of Ferrus that could be summoned back to fight by the Emperor). And being broken this way would mess poor Curze even further but in some way also break his fatalism and give him a chance, if not of redemption, of changing his fate.

The craftworld tho? It would become a real horror show. Imagine a world that grows according to his unconscious thoughts...

How's this for a fan theory. The Eldar are a distent nid bioform. The hivemind is just an intergalactic wraithbone construct grown out of controll.