Continuity mistake: Rassilon's gauntlet is supposed to be exactly the same one he had in "The End of Time", but the design has changed. Most noticeably, the user's palm is now uncovered.
Doctor Who (2005)
1 mistake in Hell Bent
The Day of the Doctor - S7-E16
Clara: Doctor, what's going on?
Eleventh Doctor: It's a... Uh... Timey wimey... Thing.
The Doctor: "Timey" what? "Timey wimey"?
Tenth Doctor: I... I have no idea where he picks that stuff up.
Rise of the Cybermen (1) - S2-E8
Trivia: Only eleven Cybermen costumes were built, but careful filming made it look as if there were more.
More questions & answers from Doctor Who
Chosen answer: No, no information is avalible for the identity of the entity.
Repo_Man
Season 2: The Well.
jakew25