Changeling
A walker between worlds exchanges a son of a master magician for one that is from no magic, but the magic of machines.  Each grow in their new homes with their abilities intact and soon the draw of the magical world calls back it's own for confrontation with the rise of the power of the machines.  Follow on book to this one is "Madwand".
fantasy, Science-Fiction, American Fantasy fiction, Fiction, science fiction, general
Roger Zelazny