The Non-Canon Expert looks at Darth Sidious’s admission that his apprentice wasn’t exactly as he had hoped following his defeat on Mustafar, particularly as it related to his inability to summon Force Lightning, explaining why this specific Force Ability was singled out by the Dark Lord of the Sith. This is a Legends story for Darth Sidious and Darth Vader with information found within the Legends novels and guides «Star Wars: Darth Plagueis,» The Book of Sith, «Star Wars: Jedi vs. Sith: The Essential Guide to the Force,» and «Star Wars: Dark Lord: The Rise of Darth Vader.»