"He," the Doctor corrected him. "Careful what you say, he's one of the most influential Time Lords in all of history. Also, immortal. Though only really through psychic influences at this point."

He paused from where he'd taken apart a panel, and looked over to the sarcophagus. "I wonder why he hasn't asked us if we want immortality. Must be because we haven't got the coronet or intent."

His eyes went over to Jack, then back to the sarcophagus. He had a better idea why Rassilon wasn't talking to them, and that might be for the best.

He peeled away another panel and grinned madly. "Ah ha! Now we're getting somewhere!"