Enigmatic Tome

Select a book, note, letter, or other written item of your choice. While the spell is active, a creature attempting to read the text enchanted by the spell must succeed an Intelligence saving throw against your spell save DC, or else the text will read as complete gibberish. A creature may not reattempt this saving throw until after completing a long rest. If the creature rolls a critical fail on this saving throw, they gain short-term madness and must roll on the short-term madness table outlined in the Dungeon Master's Guide.

This spell lasts until either Remove Curse is cast on the object or the object is destroyed.