Caine's Law by Matthew Woodring Stover

A maimed legend straddling two entwined worlds launches a time-bending campaign against priests and gods to rescue an innocent and overturn a cruel divine order. Told out of sequence, the story fuses ferocious, intimate action with metaphysical intrigue, exploring how stories harden into laws, how belief shapes reality, and how far one relentless will is willing to go to rewrite fate.