Realms Uncharted is a rare Instant card from Rise of the Eldrazi (ROE), collector number 206. Current market price: $9.24 (foil $37.89), TCGplayer market prices via Scryfall.
Search your library for up to four land cards with different names and reveal them. An opponent chooses two of those cards. Put the chosen cards into your graveyard and the rest into your hand. Then shuffle.