Battle for Oz: Volume One - Witch Wars:

In this adult-oriented retelling, Dorothy's first act, murder, incites riots, and causes a huge power dynamic shift in Oz. When a Congress, the Footmen of Fate, are installed, the compass-oriented witches (North, South, East, and West) who are the governors of their associated Cardinal-Point Direction States become wrapped into an all out conflict amidst a Talking Animal Civil War. There are new and old characters alike, but The Wizard, ousted as a charlatan and wielding music like a weapon...