Nigromancy is a black magic that particularly refers to the summoning of denizens of Hell.
Etymology
Derived from the Latin niger (‘black’) and Greek manteia (‘prophecy’)
History
In medieval times, Nigromancy was used used interchangeably with necromancy even though it properly relates to the summoning of Demons and Demonic varieties of goetic magic.
The term ‘Goetic Magic’ was used by the Neoplatonists (Plotinus 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.