Petty Larceny is a uncommon Sorcery card from Assassin's Creed (ACR), collector number 28. Current market price: $0.34 (foil $0.35), TCGplayer market prices via Scryfall.
Freerunning {1}{B} (You may cast this spell for its freerunning cost if you dealt combat damage to a player this turn with an Assassin or commander.) Look at the top two cards of target opponent's library and exile those cards face down. You may play those cards for as long as they remain exiled, and mana of any type can be spent to cast them. Create a Treasure token.