MAGIC: THE GATHERING
|Type:||Creature - Vampire Rogue|
When Balustrade Spy enters the battlefield, target player reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.
Balustrade Spy's ability to mill entire libraries has made it a fixture of "Oops, All Spells!" decks across Magic formats. It is currently banned in Pioneer.