Korvold and the Noble Thief
Enchantment - Saga
(CMC 4)
(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 ", 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.