Magery
Theme
Ominous Lockbox
1U
Artifact — Clue
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.
