The Tenth Doctor is a mythic Legendary Creature — Time Lord Doctor card from Doctor Who (WHO), collector number 446. Current market price: $3.91 (foil $3.77), TCGplayer market prices via Scryfall.
Allons-y! — Whenever you attack, exile cards from the top of your library until you exile a nonland card. Put three time counters on it. If it doesn't have suspend, it gains suspend. Timey-Wimey — {7}: Time travel three times. Activate only as a sorcery. (For each suspended card you own and each permanent you control with a time counter on it, you may add or remove a time counter. Then do it two more times.)