From publisher blurb:
This 12-page PDF is packed with 27 different tables that assist a GM in determining what special effects occur when a spellbook is burned.
Characters within the sphere of a burning spellbook's effects may he helped or harmed by the event. 162 entries ensure a wide range of surprising effects no matter what type of spellbook is burned.
Preview from Forbidden Arcana: Burning Spellbooks