Tersurus was a planet that had singing stones and clone banks. (All-Consuming Fire) Following a ploy with the Daleks on 22nd century Earth the Master travelled with Susan Foreman in his TARDIS to Tersurus where she believed she killed him. During the encounter his TARDIS sent a signal to Gallifrey that brought Chancellor Goth to Tersurus who then found The Master. (Legacy of the Daleks, The Deadly Assassin)
Featured in the story the Curse of Fatal Death
(The Master is watching the Doctor on his scanner.)
MASTER: Bwahahahahahaha! You are doomed Doctor. Doomed! You are piloting your Tardis into a deadly trap and even you will not suspect until it’s too late. Bwahahahahahaha!
DOCTOR [OC]: You know, if you’re going to spy on me you really should turn the speaker off.
MASTER: My dear Doctor, after our many centuries of conflict I wished you to know that your certain death is now certain! Bwahahahahahaha!
(He turns the scanner off.)
MASTER: But even you will not suspect that your destruction awaits you on Planet Zaston Four.
DOCTOR [OC]: You only turned the picture off, I’m afraid. I can still hear you.
MASTER: I know that. Of course I know that. Curse you!
DOCTOR [OC]: I wanted to talk to you anyway. I have some news that even my arch enemy needs to hear. Meet me on the Planet Terserus in two hours, relative time. And do try not to be late.
MASTER: Mock me while you may, Doctor. My revenge will be all the sweeter. And it will be a deadly vengeance. It will be the deadly vengeance of deadly revenge! Bwahahahahahaha!
(Atop a bleak mountain. The Tardis materialises and a young woman steps out, followed by the Doctor. Say hi to Julia Sawalha and Rowan Atkinson.)
EMMA: Where are we, Doctor?
DOCTOR: The Planet Terserus, once home to the Terserons, the most kindly and peace loving race I’ve ever encountered. And yet one of the most shunned and abhorred species of all history.
DOCTOR: They could communicate only by precisely modulated gastric emission.
EMMA: Oh no. Planet of the bottom-burps? So what happened to them?