Madame Vastra is a rare Legendary Creature — Lizard Detective card from Doctor Who (WHO), collector number 142. Current market price: $0.23 (foil $0.34), TCGplayer market prices via Scryfall.
Partner with Jenny Flint (When this creature enters, target player may put Jenny Flint into their hand from their library, then shuffle.) Madame Vastra must be blocked if able. Whenever a creature dealt damage by Madame Vastra this turn dies, create a Clue token and a Food token.