Sensei's Divining Top is a uncommon Artifact card from Mystery Booster 2 (MB2), collector number 231. Current market price: $36.19 (foil $83.07), TCGplayer market prices via Scryfall.
{1}: Look at the top three cards of your library, then put them back in any order. {T}: Draw a card, then put this artifact on top of its owner's library.