Path to the Festival is a common Sorcery card from Innistrad: Double Feature (DBL), collector number 191. Current market price: $0.22 (foil $0.23), TCGplayer market prices via Scryfall.
Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. Then if there are three or more basic land types among lands you control, scry 1. (Look at the top card of your library. You may put that card on the bottom.) Flashback {4}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)