The Relic (Alien Bodies)

The Relic was/would have been the body of the Doctor.

Had the War occurred and the Doctor progressed in his adventures without the War encroaching on his past selves, he would have had many further adventures and accumulated a lot of knowledge and changes to his biodata.

Much of this information was lost during the ensuing war. Thus, when he died his body became very valuable to:
 * The Time Lord from the War's future, because of what it contained and what they had so far lost in the war.
 * Faction Paradox, as due to their methods biodata would be very valuable to them, especially such a well-lived specimen as the (future) body of the Doctor.
 * Other parties, including UNISYC, Daleks, Krotons, and the Celestis.

Even on its own, the Relic was unusually powerful; while most psychics retained some power even after death depending on their pre-existing power, the Doctor had such a significant psychic potential that the Relic was still generating a psychic 'call' even after it was physically deceased.

The Relic was auctioned off by Mr Qixotl on Earth in the late 22nd century, Qixtol inviting only a select group of people interested in the Doctor's body for an actual purpose, rather than risking inviting those who just wanted the Doctor's body to mutilate it for revenge against him. The auction did not go to plan, due to such factors as the Krotons taking the place of the Daleks and the inherent danger of the various powers bidding for the Relic. The eighth incarnation of the Doctor himself arrived, at one point managing to link with the Relic's psychic energy to expel a Faction Paradox agent that had possessed one of the human delegates. Having tricked the various groups into thinking that the Relic was a temporal paradox by convincing the Celestis that they had 'marked' him as their agent in this body rather than immediately prior to his death (In reality they had marked the conceptual entity known as the Shift that had been trapped in the Doctor's mind) and ended up leaving with the Relic. He took it to the planet Quiescia and destroyed it. (PROSE: Alien Bodies)