Realms of Magic (1986)

From the back cover:

"The frontiers of the Marvel Universe are vast and some can be crossed only by those who have mastered the arcane arts of sorcery. Those who follow the mystic way, like Earth's Sorcerer Supreme, Doctor Strange, are among the greatest of heroes. In the worlds beyond ours lurk their awesome foes -- the dread Dormmammu, the malefic Nightmare, the treacherous Baron Mordo.

Within this work the mysteries of Marvel magic are revealed. New rules and explanations on using magic, new spells, and details on creating magical characters are included. More than twenty mystic dimensions are described. Full details are provided on the most important magical items, including Doctor Strange's amulet, Shaman's pouch, and Magik's mystical sword. Sixteen of Marvel's mightiest sorcerers are presented in full detail. This is a treasure-trove of wonders from the pages of Marvel Comics.

what is in the package

This game accessory is designed for use with the MARVEL SUPER HEROES Role-Playing Game. This package includes a 40-page rulebook on magic, a 40-page sourcebook with further explanations and detail, and a 16-page book on Marvel magicians."