Wizard's magic incinerated and laid waste to Munchkin towns. Powerful spells murdered and maimed their inhabitants by the thousands. The Munchkins retaliated by building armies of horrific steam powered war machines. With these they leveled the Wizard's castles and made into scorched earth huge swaths of Oz for as far as the eye could see. Even the Witches, the once noble and kind rulers of Oz, returned to the Old Magic and joined in the battles. Their powers split the skin of the Land itself, swallowing up huge armies at the wave of a hand.
Knowing that the great battle would eventually lead to the destruction of all Oz, the rulers of the Realm of Night sent for a messiah who would lead the Races out of their blood lust. From the land of Man a savior was called for by way of the Dream Realm. And into their world he came to finally end all that had gone before.