Talk:Berenike Knight/@comment-108.207.44.91-20130901082137/@comment-3492791-20140824050548

That's more like a ghost. There are no universal rules or fantasy or even fiction in general. Every fiction can have its own set of rule, as it follows the second world theory and remains constant within itself. In the basest sense an illusion is something that appears to be what it is not, in this case, real.