Collective Voyage is a rare Sorcery card from Secret Lair Drop (SLD), collector number 1009. Current market price: $9.77 (foil $12.64), TCGplayer market prices via Scryfall.
Join forces — Starting with you, each player may pay any amount of mana. Each player searches their library for up to X basic land cards, where X is the total amount of mana paid this way, puts them onto the battlefield tapped, then shuffles.