In the mini-episode "The Night of the Doctor", the mortally-injured Eighth Doctor (Paul McGann) is taken in by the Sisterhood of Karn, who revive him temporarily. The Sisterhood's leader, Ohila (Clare Higgins), offers the Doctor a selection of potions which, if consumed before he expires, will not only trigger his regeneration into a new form, but allow him to choose which characteristics his next incarnation will have. They convince the Doctor that he must take action to end the Time War, which "threatens all reality". The Doctor's initial rejection is met by the response that he is "dead already; how many more will you let join you?", and the Sisters beg him not to allow the universe to fall, as it presently "stands on the brink". The Doctor acknowledges there is not much need for a doctor any more, salutes the memory of his past companions, and asks for a potion that will turn him into "a warrior". He utters his last words ("Physician, heal thyself") and, after drinking it, regenerates into a new incarnation, known as the War Doctor (John Hurt), who declares, "Doctor no more."
