Surprise Party — ruling 1

“Printed Clown Robot tokens” are official printed creature tokens which are both Clowns and Robots. You can use the ones that appear in some Unfinity booster packs, or ones from any other set that happens to include tokens that are both Clowns and Robots.

Surprise Party — ruling 2

You’re allowed to hide the tokens anywhere on the battlefield, broadly interpreted as the table where your game is taking place.

Surprise Party — ruling 3

The tokens can be hidden under other cards or objects, face up or face down, as long as they aren’t touching each other. No stacks o’ Clowns.

Surprise Party — ruling 4

You must hide the tokens while the game is in progress.

Surprise Party — ruling 5

You can’t break other rules while hiding the tokens. For example, even if we interpreted your library as part of the battlefield for this purpose, slipping one into the card sleeve of a card in your library during a search effectively marks your deck, and that’s not allowed.

Surprise Party — ruling 6

Your opponents may report that they’ve spotted a Robot Clown token even if they can’t literally see it, provided they can identify where it is. That is, you can’t just put your hand over it and claim that can’t see it. Well, you can claim that, and it might be true, but it didn’t work for Entirely Normal Armchair and it won’t work this time either.

Surprise Party : règles, fonctionnement et interactions (MTG)

Surprise Party 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

When this enchantment enters, yell "Surprise!" and put onto the battlefield any number of printed Clown Robot tokens that aren't touching each other, that you hid on the battlefield before you cast this enchantment, and that weren't spotted by an opponent before you cast this enchantment. Robots you control get +1/+0 and have vigilance.

How it works : Surprise Party

Original English text — Wizards of the Coast / Scryfall

#1October 7, 2022· Wizards of the Coast
“Printed Clown Robot tokens” are official printed creature tokens which are both Clowns and Robots. You can use the ones that appear in some Unfinity booster packs, or ones from any other set that happens to include tokens that are both Clowns and Robots.
Card named in this ruling
Clown Robot
#2October 7, 2022· Wizards of the Coast
You’re allowed to hide the tokens anywhere on the battlefield, broadly interpreted as the table where your game is taking place.
No other card is named in this ruling.
#3October 7, 2022· Wizards of the Coast
The tokens can be hidden under other cards or objects, face up or face down, as long as they aren’t touching each other. No stacks o’ Clowns.
No other card is named in this ruling.
#4October 7, 2022· Wizards of the Coast
You must hide the tokens while the game is in progress.
No other card is named in this ruling.
#5October 7, 2022· Wizards of the Coast
You can’t break other rules while hiding the tokens. For example, even if we interpreted your library as part of the battlefield for this purpose, slipping one into the card sleeve of a card in your library during a search effectively marks your deck, and that’s not allowed.
No other card is named in this ruling.
#6October 7, 2022· Wizards of the Coast
Your opponents may report that they’ve spotted a Robot Clown token even if they can’t literally see it, provided they can identify where it is. That is, you can’t just put your hand over it and claim that can’t see it. Well, you can claim that, and it might be true, but it didn’t work for Entirely Normal Armchair and it won’t work this time either.
No other card is named in this ruling.