The Runestaff (Runestaff Series #4)

In Michael Moorcock's vast and imaginative multiverse, Law and Chaos wage war in a never-ending struggle over the fundamental rules of existence. Here, in this universe, Dorian Hawkmoon traverses a world of antique cities, scientific sorcery, and crystalline machines as he pulled unwillingly into a war that pits him against the ruthless and dominating armies of Granbretan.