Godblood

A golden mask stolen from a jungle tomb binds a thief to a dying war-god—and paints a target on his soul. Brython Sarl never wanted divine power, but with shadow-priests hunting him and an ancient gate threatening to swallow the sun forever, he may be the only mortal alive who can stop eternal darkness from consuming the world. Now the man who once stole from the dead must decide what he's willing to give to the living.