Bought it when I was 11 because there was a unicorn on the cover. I tried to read it then, but it was a little dry for me. I came back to it 2 years later and loved it. It's been a favorite ever since.
One of his best books. I am almost finished with the series and I do recommend this whole series. A good look into what kind of stories Piers Anthony can create. Lots of depth.