Open the Way is a rare Sorcery card from March of the Machine: The Aftermath (MAT), collector number 163. Current market price: $4.99 (foil $6.21), TCGplayer market prices via Scryfall.
X can't be greater than the number of players in the game. Reveal cards from the top of your library until you reveal X land cards. Put those land cards onto the battlefield tapped and the rest on the bottom of your library in a random order.