Description
| Set: | Unknown Event |
| Type: | Legendary Creature — Human Spy |
| Rarity: | Rare |
| Cost: | {3}{U}{B} |
When X enters, you may put it into target opponent's hand. If you do, as long as it remains in their hand, that player can't cast X and they play with their hand revealed.
During your turn while X is in an opponent's hand, you may activate abilities of nonland permanents opponents control. If you activate the crew or saddle ability of a permanent this way, gain control of it until end of turn. Untap it. It gains haste until end of turn.
During your turn while X is in an opponent's hand, you may activate abilities of nonland permanents opponents control. If you activate the crew or saddle ability of a permanent this way, gain control of it until end of turn. Untap it. It gains haste until end of turn.
![X, Mystery Racer [Unknown Event]](http://theboosterbox.com/cdn/shop/files/mtg_placeholder_6fd3a6b1-3220-4da5-8eb2-9767513126c8.png?v=1777303088&width=500)