Restrictions on Card Usage
In UNION ARENA, a deck may have up to 4 cards of the same card number. However, in official and sanctioned tournaments, the number of some cards that can be included in the deck will be restricted.
- *Cards with the same card number but with different illustrations are also considered the same cards.
Selection and Announcement, and Enforcement.
- ・We will closely monitor the win-rates, tournament results, and usage of certain decks to consider enforcing restrictions if certain decks deviate from our game’s objective.
- ・Please note that depending on the environment of the game, the status of [Restricted Cards] may change.
- ・We will continue to announce considerations for these restrictions through official broadcasts after major events and tournaments, Producer’s Letters, and the official Twitter. When this page is updated, there will be a post on the official Twitter as well.
- ・We plan to review the restricted card list once every 6 months and will only lift restrictions on cards if we do not observe a significant bias in the outcome of the events.
Types of Use Restrictions
Restricted Cards (1)
Only 1 card can be included in the deck.
Restricted Cards (2)
Only 2 cards can be included in the deck.
Restrictions on Card Usage From August 01, 2025
Restricted Cards (1) : Only 1 card can be included in the deck.
CODE GEASS Rozé of the Recapture
UA34BT/CGD-1-070
Foul Bout
- *Including parallel cards
In the so-called “Bule Foul Bout Deck” from CODE GEASS Rozé of the Recapture, this card can be played from the early stages of the game when there are few characters on the field, allowing multiple damage to be dealt to the opponent. Additionally, by playing "CGD-1-041 Loki" during a raid, it is possible to attack or block the opponent's attacks.
Using this card in combination with "CGD-1-071 Foul Bout: Titan Mode" for consecutive raids results in a strategy that has a greater impact on the game environment than anticipated. It is extremely powerful and has a clear advantage over many other decks. The usage rate and win rate of decks utilizing this card in events have both exceeded the set thresholds.
As this diverges from UNION ARENA’s core principle of allowing players to enjoy a wide variety of decks and titles, this card will be designated as a Restricted Cards (1) .
Restricted Cards (2) : Only 2 cards can be included in the deck.
Sword Art Online
EX08BT/SAO-2-029
Yuna
In the so-called “Purple Yuna Deck” from Sword Art Online, when combined with “SAO-2-061 Ubiquitous dB” and used multiple times, players are able to memorize the cards placed at the bottom of their deck and predict what they will draw next. This also allows them to consistently select the most optimal card to use according to the current situation, resulting in a clear advantage over a wide variety of other decks. The usage rate and win rate of decks utilizing this card in events have both exceeded the established thresholds.
As this diverges from UNION ARENA’s core principle of allowing players to enjoy a wide variety of decks and titles, this card will be designated as a Restricted Cards (2) .
Restrictions on Card Usage Lifted From August 01, 2025
The following Restricted Cards (2) : will be lifted.
After May 1, 2025, you may include up to 4 cards in your deck.
JUJUTSU KAISEN
JJK-1-105 Sukuna
- *Including parallel cards
We have confirmed that there are no problems in the current game environment, so we will lift it.
Restrictions on Card Usage Currently in Effect
Restricted Cards (1) : Only 1 card can be included in the deck.
CODE GEASS: Lelouch of the Rebellion
CGH-1-083
Nunnally Lamperouge
Restricted Cards (2) : Only 2 cards can be included in the deck.
JUJUTSU KAISEN
JJK-1-105 Sukuna
- *Including parallel cards