This is an original cover illustration for Book #3 of the "Adventures of Kate" trilogy by T. A. Barrron, published by Tor, in paperback, 1996 (I show the cover as reference). Part of the "Lost Years of Merlin" series of popular YA novels by the author, it may be a movie one day soon!  In the meantime yiou can enjoy owning the cover painting, done in acrylic on gypsum board, 24" x 16"  and signed.