Sméagol, Helpful Guide is a rare Legendary Creature — Halfling Horror card from Tales of Middle-earth Promos (PLTR), collector number 231s. Current market price: — (foil $3.38), TCGplayer market prices via Scryfall.
At the beginning of your end step, if a creature died under your control this turn, the Ring tempts you. Whenever the Ring tempts you, target opponent reveals cards from the top of their library until they reveal a land card. Put that card onto the battlefield tapped under your control and the rest into their graveyard.