The Books of Magic, Volume 7: Death After Death

Since learning that he would become a wizard of infinite power, young Tim Hunter has been cursed with a life of loss and death. Tired of the misery that has become his adolescence, the fourteen year-old mage releases all of his magic unto the universe. But as a war between Heaven and Hell erupts over the newly released power, Tim learns that his impulsive action may lead to the end of all Creation. Now the completely powerless sorcerer must find a way to outmaneuver and manipulate an assortment of angels, demons, and deities in order to regain his magic or watch as all of existence ceases to be.