Board the Weatherlight is a uncommon Sorcery card from Dominaria (DOM), collector number 8. Current market price: $0.27 (foil $0.54), TCGplayer market prices via Scryfall.
Look at the top five cards of your library. You may reveal a historic card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. (Artifacts, legendaries, and Sagas are historic.)