In the fantasy land of Xanth, a satyr explores a miniature planet circling a princess' head. The planet contains Xanth's past and future. The novel is based on suggestions from readers to the writer.

To avert a climatic disaster that threatens Xanth, Nimby and his consort exchange places with a young couple from Earth, and must engage a deadly Demon without the use of their magical powers.

Orb had a rare gift—the magic which manifested whenever she sang or played her harp. No one could resist her music. But she knew that greater magic lay in the Llano, the mystic music that controlled all things. The quest for the Llano occupied Orb's life. Until she met Natasha, handsome and charming, and an even finer musician. But her mother Niobe came as an Aspect of Fire, with the news that Orb had been chosen for the role of Incarnation of Nature—The...

Like On a Pale Horse, this second, complete-in-itself novel of the Incarnations of Immortality is a richly imagined and always fascinating story. And again, Piers Anthony adds to his gripping plot a serious, though-provoking study of good and evil. 
When life seemed pointless to Norton, he accepted the position as the Incarnation of Time, even though it meant living backward from present to past. 
The other seemily all-powerful...