The Sword of The Dawn

In Michael Moorcock's vast and imaginative multiverse, Law and Chaos
wage war in a never-ending struggling 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.
In The Sword of the Dawn,
Dorian Hawkmoon's quest to destroy the Dark Empire of Granbretan leads
him onto the path of a man who possess a rare ring that allows men to
travel through time. Hawkmoon uses this ring to travel to a far future
New Orleans, where he must battle the Pirate Lords who possess the Great
Sword of the Dawn, which can end the Dark Empire once and for all.