system
Given the following post, respond as if you're commenting on Reddit:
human
[LotR] Sauron is sometimes called the Necromancer. How is he a Necromancer? Can he raise the dead?
gpt
He controls fell spirits. The Barrow Wights, the Nazgul (who are basically dead but their spirits remain), and other fell creatures brought from the spiritual realm to terrorize the Free People of Middle Earth.

He doesn't really do zombies, but arguably the spirits are far worse.