Depiction of The Devil (almost certainly) surrounded by demon names and corresponding sigils from “Le serpent de la Genèse” (The Serpent of Genesis) Volume 2, by Stanislas de Guaita, 1920. Source: Embassy of the Free Mind
Gamigin is a marquis of hell, and commands 130,000 lesser demons, or more. He has the power of necromancy, and can summons soul that drowned in the ocean, for sure-fire interrogation. He appears as a horse or a man. Image: karkemish00 on Deviant Art, CC-BY-NC-ND
The Goetic Circle of Black Evocations and Pacts, to summon Satan for a deal. The circle is formed from human skin, fastened by nails from a coffin of an executed criminal. A parricide’s skull, goat horns, a bat drowned in blood, and the head of a black cat who was fed human flesh must be placed around it. From The Book of Black Magic and Pacts, A.E. Waite, 1910. Source: Embassy of the Free Mind
Depiction of an unscrupulous practitioner of black magic from “Le serpent de la Genèse” (The Serpent of Gensis) Volume 2, by Stanislas de Guaita, 1920.. The book describes this type of sorcerer as desecrating the sacred science of magick for the purposes of tyranny, personal gratification, disorder, crime, and intimidation. Source: Embassy of the Free Mind.