Originally Posted by DiscountCanadian
They survived in various ways. One became a lich and many others survived by being warped into the Shadowfell, only to reemerge in the late 14th century DR and attempt to recreate the Nethril Empire in the far north of Faerun. You can read more on that, but I would temper my speculations just a tad about Gale lol

Oh I know all about it. I was joking around. I learned all about it long time ago when I heard a Lich ElderBrain was a thing. That lead me to Mindflayer mages which lead me too the netherese mages I was referring to specifically. It is quite a topic. Not all netherese mages went the same way and some are still unaccounted-for and probably passed the knowledge on or became secluded Lichs.

If there was going to be a Mindflayer civil war, I'd say that would probably not so good for Faerun if they got involved.