The Ruiner's Tome

A book written by a hage known as 'The Ruiner' who was a famed Peridotan mage during his time and migrated to Kaechaek in order to manipulate it's ability to form dreams to create a stronger energy than Runic Energy. 
The Kaechaek Party purchased the Ruiner's Tome from The Bladed Odyssey auction house in Sanctuary, notably outbidding the head of necromancy and the head of evocation from The Mind's Jewel in Peridot. 
When Hermione of Vallea identified the Ruiner's Tome, her identify merely contained a warning that she should not open this book.