Name: Ominous Lockbox Cost: 1U CMC: 2 Color: U CID: U Type: Artifact -- Clue Rules Text: As Ominous Lockbox enters, secretly choose a number between 1 and 20. When an opponent casts a spell with mana value equal to the chosen number, sacrifice Ominous Lockbox. If you do, copy that spell, and you may choose new targets for the copy. {2}, Sacrifice Ominous Lockbox: Draw a card. Set/Rarity: Alchemy: Murders at Karlov Manor rare Set Code: YMKM-R Legality: Legal in gladiator, Legal in timeless, Legal in brawl, Legal in historic