Complex sentence: Reacting quickly to this, he confined his soul to the Sacred Tome and ventured to re-write his world by having the other Overlords of Netherworlds write wishes within his pages.
Split into simpler sentences: Reacting quickly to this, he confined his soul to the Sacred Tome and ventured to re-write his world. This could be done by having the other Overlords of Netherworlds write wishes within his pages.