I'm not even talking about the nastiness of combined elves. Basically during the course of events in this book the vortex on Ulthuan will collse and magic in the world will go bat****, causing:

1. 4d6 for winds of magic
2. All casters are loremasters (hope you like being gatewayed 4 times a phase by the 4 units of pink horrors)
3. All lord level casters also know a special new spell ... Basically new versions of the SoM spells. These spells can not be dispelled when cast. One example is the metal spell on a 15+ gives a unit 2+ ward save.

Oh yeah, and dwarves are even more ****ed and get nothing from this new nastiness.