Oracle

An oracle was, in the words of the Second Doctor, "a fount of wisdom". (PROSE: The Roundheads) Oracles at least supposedly had prophetic powers, messengers of God. (PROSE: The Taint) Jamie McCrimmon thought it was "a kind of wee boat". (PROSE: The Roundheads)

The Pythia knew a web of thought connected every augurer and oracle in the universe, and she predicted that a time would come when it would be broken. (PROSE: Cat's Cradle: Time's Crucible) In a later period, Cat people native to the Homeworld had the power of prophecy and were used as oracles by members of the Great Houses. Thessalia of House Ixion had one such oracle. (PROSE: The Return of the King)

The oracles of ancient Greece could prophesy anything except their own futures; the Eighth Doctor compared them to Time Lords in this manner. (PROSE: Alien Bodies) Plato did not believe in prophecy, and found oracles to be rubbish, and anyone who believed them to be incredibly gullible. (PROSE: The Spindle of Necessity)

People often thought the Doctor and his companions to be oracles because of their seemingly impossible knowledge of the future. (PROSE: The Roundheads, The Adventuress of Henrietta Street)

The Duke of Sighs talked of his oracle often. His oracle was aware that both Anji Kapoor and Fitz Kreiner came from far, far away. (PROSE: Grimm Reality)