12 hours ago, Khudzlin said:

Your first sentence is far too general. You do reveal the next villain stage when you defeat a villain. You also reveal the next main scheme when the current one advances. But an encounter card entering play is not sufficient for its When Revealed effect to trigger, it has to be specifically revealed (usually during the last step of the villain phase) or enter play during villain setup.

True - I was only really talking about the Villain deck advancing (and Flipping in the case of Risky Business). The rules reference has a very clear section on ‘revealed’ that should make all interactions clear.