X [Unstable]

Set: Unstable Type: Legendary Creature — Human Spy Rarity: Rare Cost: {U}{B} As long as X is in X's owner's opponent's hand, X's owner may cast X and activate X's abilities. That opponent can't cast X and plays with their hand revealed.{U}{B}, {T}: Put X into target opponent's hand.{3}{U}{B}: You may play a land or cast a spell from the hand X is in. If you cast a spell this way, you cast it without paying its mana cost.