Ancient Stirrings is a uncommon Sorcery card from Masters 25 (A25), collector number 159. Current market price: $0.31 (foil $1.37), TCGplayer market prices via Scryfall.
Look at the top five cards of your library. You may reveal a colorless card from among them and put it into your hand. Then put the rest on the bottom of your library in any order.