Carpet Diem: Or...How to Save the World by Accident — Justin Lee Anderson

Fifteen years after losing most of his family to a devastating, pudding-related tragedy, Simon Debovar has settled into a life of self-imposed exile from the stinking, selfish morass of humanity. Content that his daily highlights will include hazelnut coffee, a long bath, and the occasional jar of olives, his life is completely upturned by the discovery that his ornate living room carpet is the deciding factor in a bet between God and Satan. When mysteriously well-timed carpet thieves deprive him of the crucial heirloom, Simon is forced to leave his hermit's existence behind for a world of angels, demons, witches, and immortals. And then it gets complicated.