Though Maul's legacy was seemingly cut short in The Phantom Menace, the former Sith apprentice has had a massive impact on Star Wars' story.
The apprentice who kills Plagueis that story is referring to is meant to be Palpatine, Darth Sidious. But before Sidious ... doing is setting Plagueis up to do arguably the most important thing ...
Darth Sidious leads him to a healing chamber and places him in his signature armor. As soon as he wakes up, the first thing he asks is about Padmé, his wife. Then, the Sith master tells him that ...