ASH-Coven

necromancy
/nekrəˌmansē/

: The practice of magic involving communication with the deceased – either by summoning their spirit as an apparition or raising them bodily – for the purpose of divination, imparting the means to foretell future events or discover hidden knowledge, to bring someone back from the dead, or to use the deceased as a weapon, as the term may sometimes be used in a more general sense to refer to black magic or witchcraft.