Petals of Insight is a uncommon Sorcery — Arcane card from Champions of Kamigawa (CHK), collector number 79. Current market price: $0.23 (foil $0.50), TCGplayer market prices via Scryfall.
Look at the top three cards of your library. You may put those cards on the bottom of your library in any order. If you do, return Petals of Insight to its owner's hand. Otherwise, draw three cards.