We all know that The Flight from the Shadow was the beginning of the migration to Cerilia and was due to growing power of Azrai.

That is all there is we know, but i can imagine this has been something REALLY big at the time causing that many people to flee.

So what do you think could have happened?
how was this growing power manifested?
what made it so bad that everyone started to "run away"

was this some sort of Army of the Dead ala Game of Thrones or (a) really bad government(s) that got so widespread corrupted that people fled (like you see sometimes happening in the real world, like for example right now in a latin american country)
Or perhaps the veil with the shadow world was already starting to rip there?

i'd like to hear your thoughts and ideas on this matter.