Not for everyone or every game, but very thoughtful review of real evil and what its limits are in Mage, and so in some sense, useful to many.

A clear position on Nephandi and what they are (if only in the Storyteller's mind) seems to me indespensible to a game like Mage, and though I have my own idiosyncratic ideas about them, this book is already usefully reshaping & improving my thoughts.