Ah, sorry, lost track of how much information was disseminated and absorbed by others during... everything. Myself and Kyle went to investigate the peninsula to the north of Thorne in an effort to clear what we could of the area along what Viktor and Strange had pinpointed as a direction.

We found the start of the illusion up that way but couldn't break it, so we returned back for additional assistance. Brought Yennefer with her apprentices and they had brought various books including some on High Magic, as I knew the illusion hadn't been cast with Academic magic and with Josselyn's involvement they assumed High Magic.

The books were more scholarly than anything, no methodology, and they seemed to have access to them because they were apprentices.