The Book of Ashur is said to contain knowledge of all the spells in the world. Though lost or stolen many times, the book has always found its way back into the hands of those who can be corrupted by the knowledge it contains. The book is a huge black tome, bound in Beastman skin and written in Magick. While the text purports to be a simple treatise on magic, it constantly and subtly hints that magic and Chaos are intertwined and that only the Chaos gods can teach the reader all that is necessary to be a truly great wizard.[1a]