Covetous Urge is a uncommon Sorcery card from Throne of Eldraine (ELD), collector number 207. Current market price: $0.07 (foil $0.21), TCGplayer market prices via Scryfall.
Target opponent reveals their hand. You choose a nonland card from that player's graveyard or hand and exile it. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.