Liber Thagirion, whose title comes from the Qliphoth of the Kabbalistic Tree of Death that refers to the concept of violence and whose counterpart is the sixth Sefira Tipheret, is a short but intense grimoire of draconian and Luciferian magic. The book includes rituals and meditations that will guide the reader through the mysteries of the Black Sun from the perspective of the draconian initiate, focused on solo practice, in a self-initiated way. Among them are invocations of Sorath, Belphegor, meditations with the Black Sun, and calls of the Adversary. The central ritual of the book is that the magician transmutes the Black Sun (Saturn) to destroy himself and rise again completely renewed, with another essence different from the one he previously possessed.

Asenath Mason is the author of a good number of books and essays on esoteric, religious, and mythological subjects, with a particular focus on Left Hand Path philosophy, Luciferian spirituality, and the Draconian tradition. She is the founder and coordinator of the Temple of the Ascending Flame, a platform for people from all over the world who want to share certain aspects of their work within the Draconian Tradition with other adherents of the path and for those who need guidance in this type of initiatory magic. She is also the author of Necronomicon Gnosis: A Practical Introduction (2007), Qliphotic Meditations (2016), El Libro Ritual Draconiano (2016) or the most recent Tunnels of Set (2020).