Trivia: At the beginning of the scene where Clara persuades Rigsy to give her his chronolock, a poster can be seen on a wall in the background, reading "DeLorean" (a Back to the Future reference) in Aurebesh (the writing system from Star Wars). (00:25:00)
Continuity mistake: When the Doctor hands out of the base manuals to the expedition crew for the dream test, Albert Smith is shown with his manual open in shots from behind him several shots before he's shown opening it in a shot facing him. (00:35:56)
The Magician's Apprentice - S9-E2
Continuity mistake: During the exchange where the Doctor says "You flatter me" and Davros responds "A pity. I intended to accuse", Davros' hand goes from just under his chin to resting on his chair's control panel. (00:40:15)
Continuity mistake: When Bonnie is filming the transformation of the Zygon man who she stripped of control over his shape, her grip on the phone she's using changes between shots.
Continuity mistake: When the Shade leaves Clara and she falls, her body is twisted because of the way her legs are bent with one on top of the other and her arms are out to the side. In the overhead shot of her, her positioning has changed, her body isn't twisted and her arms are more straight down her side.
Chosen answer: No, no information is avalible for the identity of the entity.
Repo_Man