Schulke's book on esoteric toxicology was first published in 2012. Its principal concern is the intersection of magic and poison, originating in remotest antiquity and reaching into the occult traditions of the present day. Beyond their functions as agents of bodily harm, poisons have also served as gateways of religious ecstasy, occult knowledge, and sensorial aberration, as well as the basis of cures. Allied with Samael, the Edenic serpent of first transgression whose name in some interpretations is ‘Venom of God’, this facet of magic wends through the rites of ancient Sumer and Egypt, through European Necromancy, Alchemy, the arcane rites of the Witches’ Sabbath, and modern-day folk magic. This second edition of Veneficium is now properly contextualized within a trilogy of forthcoming books entitled Triangulum Lamiarum (‘Triangle of the Witches’), each of which concerns a specific ontological aspect of witchcraft. Veneficium covers the occult parameters of poison, toxins, and venom, and their presence in witchcraft and allied magical arts. This new edition includes a new typographic design for the entire book, to be used for the whole of the trilogy. Certain chapters have been expanded and there is one additional chapter which was not included in the first edition.