Sith Sorcerer in armor
A Sith Sorcerer or Sorceress was an individual who was proficient in the arts of Sith magic, using spells, talismans or incantations to focus the power of the dark side. They were discovered during the time of the original Sith Empire. Sith Sorcerers gained their powers through intense study of Sith traditions and application of the dark side of the Force. Occasionally, aspiring Sorcerers were developed through sheer innate talent, rather harnessing them through study, or spontaneous, or being bestowed upon them by another source.
Some sorcerers became more proficient with magic and were able to preform more advanced spells, and became known as Sith Conjurers.