Damn... that's an interesting backstory. Could it be that the Evil God planned to use Grim'war to create his cult from the very start? The Evil God could not interfere directly in the physical world, so he had to take a soul from a different world and turn him into a book. Grim'war would be fueled by revenge and would inadvertently expose his contractors to the Evil God, thus finally creating a direct connection of the Evil God's influence to the world.