Jayemdae Tome

An enormous book, easily 3 feet square, weighing at least 50 pounds. These tomes are always the result of intense magical study, and each describes a unique and powerful method of increasing an individual’s magical potency. These works are often skillfully written, illustrated, and decorated, and are usually the magnum opus of a spellcaster’s work and their lifelong dream. This book describes a well-researched, highly-detailed magical ritual, but only one. Finishing this book takes 14 days of concentration, with at least 8 hours each day devoted to reading it. Any interruptions in this period of time make it necessary to restart the book again from the beginning. Once the book is finished, if the reader was a spellcaster, they roll 1d20. On a result of 5 or lower, they gain an additional 2nd level spell slot; on a result of 6-10, they gain an additional 3rd level spell slot; on a result of 11-15, they gain an additional 4th level spell slot; on a roll of 16-19, they gain an additional 5th level spell slot; and on a roll of 20, they gain an additional 6th level spell slot. If the result would be of a level higher than the level of the highest available spell slot, the spellcaster instead gains an additional spell slot of their highest level available. If the reader is not a spellcaster, they gain one 3rd level spell slot, and knowledge of one 3rd level spell from the Wizard spell list. The reader need not prepare this spell to cast it, and they regain any expended spell slots at the end of a long rest, as per usual. Once the book has been read, the ritual described within loses all magical potency for 50 years.