The world raven - A.J. Smith

The dead god is waking. His power-mad priestess has deployed a mass of men and beasts onto the plains of Ro Weir. Faced with this black swarm, the last remnants of a nation crumbles and falls. This is the final battle for the mortal lands of Ro.

Far to the north, the ice men of Rowanoco muster their Exemplars against the witch's assassins. In the blistering southern deserts, a squire with no master walks unscathed through a poisoned city. And, in the halls beyond the world, a thrice-born man dares to tread the path of Giants...

All that was dead will rise. All that now lives will fall...

This is the final epic battle for the Lands of Ro.