12/11/18:
Given my glacial update pace of late, you may not remember Railah, especially with a new haircut. (I think we last saw her in Episode 150) But you should remember! For she is the human avatar of Jergal, aka, the Nothing itself. Her machinations with the Lady of Pain have been mentioned, but this is the first time the Nothing's own motivations for changing its modus operandi have been addressed.