Ancient Stirrings is a common Sorcery card from Mystery Booster 2 (MB2), collector number 202. Current market price: $1.33 (foil $16.17), 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.