Yon Ill Wind

On a dare from his fellow Demons, the omnipotent entity known as X(A/N)[superscript th] agrees to prove his powers by traveling incognito through the realm he secretly rules - the enchanted land of Xanth. But the challenge they've given him may be more than even he can manage.
First, he must assume a form of their choosing - a comical creature called Nimby, with the body of a dragon and the head of an ass. Second, he may only speak once during the adventure - and may never breathe a word about his true identify. Next he must stay with the first creature he meets or lose his power to move.
And last, and certainly worst, he must wring at least one tear from his companion or forfeit his high rank for ages to come. Unfortunately his partner on this peculiar quest turns out to be an ill-tempered lass called Chlorine, with a tart tongue and a talent for tainting water.
But that's not the end of his troubles, for a magical spell has opened a door between Xanth and the mundane world beyond, letting in a rampaging hurricane, and a hapless human family along with it - Jim and Karen Baldwin, and their two teenage sons, David and Sean.
Together this mismatched company encounters a host of turbulent misadventures as they struggle to keep Xanth from being blown off the map forever.