From the Back of the Book:This is a Descent into DarknessThis sourcebook contains everything a GM or players needs to design imposing villains and use them to thwart the efforts of heroes everywhere. Join the crusade for tyranny, injustice, and oppression, or give your campaign's villains an extra edge.The text within this book is not for children. It is a journey from which you can never come back.Just Remember, You Were Warned New feats New prestige classes New spells New divine domains New monsters New gods New magic items Tips for running evil campaigns - BoardGameGeek