Question: What Star Wars film does the Jedi master who Darth Bane appears as a vision first appear in?
Sentence (from "Darth Bane"): He was created by George Lucas, within the "Star Wars" canon where he is first mentioned in the novelization of "", where Bane is an ancient Sith Lord who lived a thousand years before the films, and is known for being the originator of the "Rule of Two" that the Sith Lords follow, which establishes: "A master and an apprentice can be the only Sith in the galaxy at one time", which still remains as his backstory.
Relevant evidence: Yes