You become The lonely God, The Predator, The Great Exterminator, the Destroyer of Worlds, gaining the body and memories of the doctor; you gain an unfathomable intellect, charisma, and skills; and you are lucky enough that you could charm an entire army of Daleks, Cybermen, Sauntaurons, and many more to back down at the very mention of your name. You are unpredictable to the Possibility Engine, which reads the infinite possible timelines in infinite universes, selects the very best scenarios, and forces them to happen. It seems to just forget about you and breaks at adding you to its variables. You also gain the doctor's unwavering willpower, able to power through four and a half billion years of torture and still come out on top with your sanity in tact. For some reason, you have also become good at running and making improvised plans.
Project V17/Powers/Shardless/Technology and Artifice Power Upgrades/The Doctor (Doctor Who)
From Worm CYOA Wiki
The Doctor (Doctor Who)
Cost: 10 SP ()
Required: Time Lord (Doctor Who)
Required: Sonic Screwdriver (Doctor Who)
Required: Psychic Paper (Doctor Who)
Required: TARDIS (Doctor Who)