Marina Vendrell is a rare Legendary Creature — Human Warlock card from Duskmourn: House of Horror (DSK), collector number 360. Current market price: $0.37 (foil $1.13), TCGplayer market prices via Scryfall.
When Marina Vendrell enters, reveal the top seven cards of your library. Put all enchantment cards from among them into your hand and the rest on the bottom of your library in a random order. {T}: Lock or unlock a door of target Room you control. Activate only as a sorcery.