by Margaret Weis, Tracy Hickman
This is the fourth book in the Death Gate Cycle, set on Chelestra, Realm of Sea, the last of the four worlds created by the Sartan during the Sundering of the Old World in their battle against the Patryns. The narrative is interwoven with the personal diary of Grundle (who is just awesome!), dau...
Found a big box of sci-fi/fantasy paperbacks out on the sidewalk in Park Slope and grabbed a few. They actually had the first four Death Gate books, but I had already spent money on books 1 and 2, alas.