This is one of the best RPG resource-books I've ever picked up. I was already extremely well-versed in the lore of Warhammer Fantasy, so I didn't think I would get much out of this except for an expanded collection of spells and magic items.

In that regard, this expansion does not disappoint. It just about triples the amount of spells for each of the lores in the Core Rulebok, and adds several pages of new magic items.

What I loved the most about this book, however, was just how rich and interesting the flavour of magic came across. From short stories and quotations, everything comes alive. The essence and nature of magic in the Warhammer Fantasy world have never, to my knowledge, been so thoroughly detailed, complete with excellent notations and suggestions for how to incorporate different thematic elements into your game mechanically.

To top it all off, there are very complete descriptions of each of the colleges of magic, and interesting rules for runic magic that Dwarfs can forge.

The only thing this book does not cover are the traditions and spells of the high elves, but the book itself explains very convincingly why it wouldn't have been an appropriate inclusion.

Overall, I'd recommend this for any WarPG GM, whether his group has a spellcaster or not. It will help one understand how magic operates and interacts with the game setting, and allow one to better depict the whole host of magician allies or enemies any group is likely to encounter along the way.