" is a legendary, secret text containing all worldly knowledge, supposedly brought by Christian Rosenkreutz from Damascus. The "Book of Nature" Liber mundi

Book M: Liber Mundi comprehensive 240-page guidebook written by M.M. Meleen Tabula Mundi Tarot

However, in modern occultism (specifically within Chaos Magic, Thelemic orders, and Esoteric Satanism), Liber Mundi has taken on a different shape. It is viewed as a —a text that contains the core mathematical and symbolic code for reality manipulation.