Possible Magic: The Complete Trilogy. Possible Magic, #4

Possible Magic is the omnibus edition of the Possible Magic Series. All three novels that make up the Posible Magic Series are included in this single volume. The series includes friendships, coming of age in a very peculiar way, adventure, fantasy, sword play, wizards, and witches. In the final tally, Matt must answer the original question posed: Which kid armed with only a grab bag of stage magic tricks wouldn't like to believe they can confront an evil wizard and win? Unfortunately for Matt, he has no choice except to try, but he has no hope of winning. Possible Magic, the Omnibus* Edition, Book 4 of the Possible Magic Series includes the following three  novels of the triliogy: The Princess, the Knight, & the Knave, Book 1 The Tunnel at the End of the Dark, Book 2 A Stark and Dormy** Knight, Book 3 *Omnibus Edition: a book containing a collection of related novels or stories.** Dormy: golfing terminolgy used in match play to describe when one team is so far ahead in points that they cannot p;ossibly lose.
The evil wizard Sobieslaw is dormy.