The Magick Stone of Dreams to give it its full title
was written in 1985 by Brian Moriarty.
Wishbringer is one of the more obscure additions to the Zork universe, as
it all takes place in a dream in the Zork universe before Zork Zero.
Wishbringer isn't really part of the Zork series as the main character
doesn't live in the Zork Universe but the dream is in the Zork universe.