Last will and testament
From Tardis Wiki, the free Doctor Who reference
Missy explained to Clara Oswald that the confession dial was, in her terms, the last will and testament of a Time Lord, in this case the Twelfth Doctor. (TV: The Magician's Apprentice)
Behind the scenes
A companion of the Doctor's decided to write out his last will and testament upon learning that a director from Blake's 7 would be joining Dr Who. (NOTVALID: So You Think You'd Make A Good Companion For Dr Who!)
