Castielle, Dark Dreamer

+1: Look at the top three cards of your library. Exile one, put one of the bottom of your library, then add the final card to your hand.
-2: Target player reveals their hand. Exile a nonland card from their hand. If their hand is empty, exile a nonland card from their graveyard instead
-9: Emblem: "You may cast spells in exile and spend mana as though it were mana of any type to cast then, then remove those spells from the game."