=== Rassilon === 

 Just to be clear, the Doctor did say before the Time Lord President vanished that he was Rassilon. Contrary to an earlier revision, however, there's no Glove of Rassilon – it's a prediction based on a naming pattern of many items associated with Rassilon, but it's unconfirmed. And yes, this Time Lord President being Rassilon is extremely non-trivial – even within the Time Lord timeline, he should've been long, long dead.