Being a Green Mother - Piers Anthony Initially, this fifth book was meant to be the last of the Incarnations of Immortality series. Piers Anthony lets his imagination flow a bit more freely in Being a Green Mother. Most of the loose ends are tied up fairly well and the Kaftan family tree is filled out. The book is much less formulaic than the previous four. The story is not so much about adjusting to the immortal office of Nature as much as the process of assuming it.