This is a 25 page compilation of the three Eldritch Wizardry books, containing:
Book One: 30 optional spells to inspire your imagination. All these spells are described in the S&W format, so they’re less detailed and more open-ended than you’ll find in most fantasy role-playing games.
Book Two: a set of tables for generating magic-related ideas for spells, items, and artifacts.
Book Three: Sources for boosting and channeling magical power. Three modes are covered: Ley Lines, Point Sources, and Planar Shapes. In addition, there is a section on summoning elemental creatures.