Sith necromancy was a niche sub-discipline of Sith magic combining the techniques and practices of Sith alchemy with the rituals and incantations of Sith magic for the purposes of reanimating the dead.
Dathka Graush, a Sith King of Korriban active in the decades prior to the arrival of the Dark Jedi Exiles in 6900 BBY, was among the earliest practitioners of Sith necromancy, reanimating and commanding vast armies of Korriban zombies by means of the Tsaiwinokka Hoyakut incantation. The Jen'jidai Sorzus Syn included a copy the Tsaiwinokka Hoyakut spell in her titular chronicle, expressing disappointment at being unable to meet the late Sith king prior to his death in the decades preceding the Exiles' arrival.
- Book of Sith: Secrets from the Dark Side