The Book of Magic Lore, sometimes referred as Lorebook, is a magic book, and one of the twelve Royal Magical Treasures of Amarillia.
The Book was written in an ancient language by the Grand Wizards of Amarillia, but was lost long ago. It was found by a group of adventurers in the Worm Marshes, and sold to a scholar, who gave it to the ruling king [1].
The Lorebook was then given to Sallazar, who uses it, even after his death, as he used it in order to communicate with Jallarial, the last wizard able to defeat the Bone Demon [2][3].