Clara Oswald is a rare Legendary Creature — Human Advisor card from Doctor Who (WHO), collector number 923. Current market price: — (foil $13.74), TCGplayer market prices via Scryfall.
Impossible Girl — If Clara Oswald is your commander, choose a color before the game begins. Clara Oswald is the chosen color. If a triggered ability of a Doctor you control triggers, that ability triggers an additional time. Doctor's companion (You can have two commanders if the other is the Doctor.)