Don't keep reading unless you're down for Shadowbringers final quest spoilers.

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Naw but real talk, Lahabrea in his crowning act of idiocy got eaten by a primal who WoL managed to beat no problemo a few moments after. Emet-Selch as an unbroken Ascian just got straight up pierced by a blade of light. Nabriales, not an unbroken Ascian, also got pierced by a blade of light and died--while fully trapped on white auracite, whereas Emet-Selch managed to tear free.

Ascians do have souls confirmed, normally they don't experience the lifestream in the same way that other people do. When Emet-Selch dies, it looks like he disintegrates in pieces into the air. I would need to rewatch to check if there are any particular number of fragments within what disintegrates, but it doesn't seem to be getting presented as "utterly destroyed as in wiped from existence".

Maybe I'm wrong. My guess at this point is that Ascians felled by a blade of light would possibly split and return to the lifestream as per other living things for reincarnation. No memories (or limited idek, I have no idea if the number of splits influences this), basically brought down to a mortal level. Previously the process was described by angry Scions as a way to destroy Ascians, but especially in light of recent lore developments I have questions on whether a soul could be truly and completely erased.

I don't particularly expect to see Lahabrea again, or if we do he would be probably somewhat worse for the wear after being processed by primal Thordan. I'm just curious if anyone has a sense of logistically what happens to the souls of Ascians after being hit with the blade of light or chowed on by primals.