Korvold and the Noble Thief [Wilds of Eldraine]

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

[I], [II] Create a Treasure token. (It's an artifact with “T, Sacrifice this artifact: Add one mana of any color.”)

[III] Exile the top three cards of target opponent's library. You may play those cards this turn.