Nigromancy
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Nigromancy (Greek nigro, "black"; manteia, "divination") is black magic, in particular, the summoning of denizens of Hell. The term was often used interchangeably with "necromancy" (divination through the dead) in mediaeval sources, however it properly relates to the summoning of demons and demonic varieties of goetic magic.
The term 'Goetic Magic' was used by the Neoplatonists (Plotinus, ca 205-270 CE, and his followers) to mean magic used for profit, and it was divided into "natural magic", magic that exploits the magical properties of natural objects; and "demonic magic", which is concerned with the coercion of spirits.