Time Lord Regeneration is a uncommon Instant card from Doctor Who (WHO), collector number 59. Current market price: $0.25 (foil $0.50), TCGplayer market prices via Scryfall.
Until end of turn, target Time Lord you control gains "When this creature dies, reveal cards from the top of your library until you reveal a Time Lord creature card. Put that card onto the battlefield and the rest on the bottom of your library in a random order."