Darth Vader begins the battle by using Force Lightning against Gandalf. In the Star Wars universe, a person must have organic hands to cast Force Lightning, which Vader does not have. See more
Force of Truth, show this Dark Lord his true nature.
[Gandalf's magic creates an illusion that makes Vader see Gandalf as Anakin Skywalker
Your eyes do not deceive you.
You are a fool, wizard. Your sorcery does not compare to the power of the Dark Side.
That is irrelevant in this moment. The One Ring is more powerful than even you. To wield this power mean that you are willing to destroy any good that is left inside. Can you do that... Anakin?