Hide in Plain Sight is a rare Sorcery card from Murders at Karlov Manor (MKM), collector number 166. Current market price: $0.21 (foil $0.33), TCGplayer market prices via Scryfall.
Look at the top five cards of your library, cloak two of them, and put the rest on the bottom of your library in a random order. (To cloak a card, put it onto the battlefield face down as a 2/2 creature with ward {2}. Turn it face up any time for its mana cost if it's a creature card.)