Sorcerer

Sorcerers are the psykers of the Chaos Space Marines. Instead of the subtle manipulation and divination of the Farseers of the Eldar or the strength-boosting powers of the Space Marine Librarians, the Sorcerers of Chaos wield death, destruction, and mutation. Their powers destroy through the most flamboyant and pyrotechnic means imaginable. They can hurl bolts of raw Warp energy at the enemy, curse them with plagues, or shift them into a formless blob of flesh.

Most Chaos Sorcerers bear the Mark of Tzeentch, who is the Changer of the Ways and lord of sorcery, but sometimes Sorcerers bearing the Marks of Nurgle the Plaguefather or Slaanesh the Dark Prince appear. Khorne despises sorcery and thus no Sorcerers appear in his service.