Balustrade Spy — ruling 1

The land card they reveal, if any, is included in the cards put into their graveyard.

Balustrade Spy — ruling 2

If the target player has no land cards in their library, all cards from that library will be revealed and put into their graveyard.

Balustrade Spy : règles, fonctionnement et interactions (MTG)

Balustrade Spy is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Flying When this creature enters, target player reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.

How it works : Balustrade Spy

Original English text — Wizards of the Coast / Scryfall

#1January 12, 2024· Wizards of the Coast
The land card they reveal, if any, is included in the cards put into their graveyard.
No other card is named in this ruling.
#2November 17, 2017· Wizards of the Coast
If the target player has no land cards in their library, all cards from that library will be revealed and put into their graveyard.
No other card is named in this ruling.