User blog comment:Kassyndra/Noi'Rys, the Whisperer of the Void/@comment-7709681-20150403183153/@comment-7709681-20150404151138

About Vel'Koz and Rek'Sai (And her Xer'Sai):

In this meta-verse in which the Sel'Rys exists, what makes you think that Vel'Koz hasn't already studied one of them with his learn-beam? If so, he can easily avoid her forever without efford.

And about Rek'Sai, Noi'Rys feeds of mind and wits, and yet Rek'Sai has been confirmed to be non-sapient, she does not think, she's barely driven by primeval urges, she nor her kindred could be targeted by her. However, your idea of exile them from the Void still make sense for one reason: Noi'Rys could have manipulated enough Voidborns to force the Xer'Sai to flee to Runeterra.

And about her being a ghost, if it turns out that all Voidborns are skepticists then she's screwed.