User:Tybort/Sandbox

Signet ring overview
A signet ring was a ring with the mark of an emblem or symbol on one end.

The Doctor kept a signet ring, which he frequently wore in his first incarnation. (TV: An Unearthly Child, et al)

Erimem wore a signet ring with the symbol of Sekhmet. (AUDIO: The Bride of Peladon)

The Master had a green signet ring with Gallifreyan writing which was used by the Disciples of Saxon to revive him after his death. (TV: The End of Time)

Eighth Doctor edits
The Doctor and Tamsin arrived on Deimos Moonbase, which had become a museum containing Ice Warrior artefacts and the atmospheric re-ioniser that was part of a failed terraforming project to create a breathable atmosphere on Mars for humans. A group of nine Ice Warriors led by Lord Slaadek — noted by one of them as "the last of our race", though as the Doctor pointed out to him, "there [were] some more of you frozen out in the asteroid belt" — (AUDIO: Deimos) had been awakened prematurely by the Monk to change the course of history. (AUDIO: The Resurrection of Mars)

The Doctor tried negotiating with the Ice Warriors on board Tourist Shuttle Number 2, which they had commandeered to reach the moonbase. He was shot, but the spacesuit he wore insulated the impact. When he woke up, the Doctor placed a guard in a the airlock and depressurised it, learning from the guard as it lost consciousness that they were going to use the re-ioniser to return Mars to how it used to be, killing the thousands of human colonists below so that their world would be reclaimed. (AUDIO: Deimos)