[quote=@The Irish Tree]
<Snipped quote by Kangutso>

Because Lifprasil was still inside of Grot. Demigods can't survive in the vacuum of space, iirc.
[/quote]

I had forgotten that detail.

[quote=@Lugubrious]
Before I begin, can anyone tell me what souls were taken and used?  I believe that Arguis' soul was taken by Vestec, right?
[/quote]

I don't know for sure, but I think got Vestec another as well. Don't know about the others.