From publisher blurb:
In this mystical tome, the archmage Maximillian Tasadantilis presents to you new spells, old spells, magical items, rituals, and rules for cantrips to add to your Braunhaven Campaign Setting and Old-School Essentials games.
Cantrips. The spells that fledgling apprentice magic-users, illusionists, and necromancers first delve into and how to apply them to your Old-School Essentials game.
New Spells. New spells inspired by multiple editions of the original fantasy role-playing game are presented.
Rituals. Rituals that can be used with the rules presented in Octhorrorfest by Appendix N Entertainment.
New Magic Items. New and old magic items, from the most common to be found to the most powerful artifacts and relics found in the Braunhaven universe!