Deck Regulations (たいかいレギュレーション Taikai Regyurēshon, literally "Tournament Regulation") refers to a set of rules that restrict how a deck can be constructed in official tournaments.

Nation Fight

Applied only in Standard format.

Clan Fight

This diagram shows which clans belong to which nations (click to zoom).

Applied only in V-icon.png Standard and Premium Standard formats.

  • Both main deck and G deck must contain cards from the same clan, with the additions below.
    • Cards with an ability causing them to be part of multiple clans may be used in a deck of any of their stated clans.
    • «Cray Elemental» may be used with all clans and nations.
    • «Royal Paladin» decks may include any number of "Blaster Dark".
    • «Link Joker» decks may include any number of cards with "Я" in their card names.
    • Cards that list a nation instead of a clan may be used with any clan that is within their nation. This includes <Zeroth Dragon> and "Progenitor Dragon" cards, and cards with the D-icon.png icon.
    • If "Neon Gyze" is included in the main deck, the G deck may include any number of <Zeroth Dragon> cards.
    • These restrictions only apply during deck construction. Therefore, if a card has its clan changed during the game, you may still use that card in the game regardless of its new clan.
  • Card Restrictions are applied.

Extreme Fight


In the game's beginning

Originally, there were no fight formats, and cards were allowed to be used in any decks regardless of their clans. In fact, due to the small number of cards available at the time, some clans simply did not have enough cards to make a deck using only cards from their own clan. For example, the Great Nature clan was introduced in Booster Set 2: Onslaught of Dragon Souls, but no trigger units were released for it until Booster Set 7: Rampage of the Beast King, so clan mixing was until that point the only way to play the Great Nature clan in a deck.

At the same time, however, many of the more powerful cards had clan-based restrictions as part of their abilities, such as a [Power] Power icon.png penalty for controlling a unit of a different clan, the Lord keyword, or an ability that could only be used on cards of the same clan or if you controlled another unit of the same clan. These restrictions, along with the rule that trigger effects require a unit of the same clan on the field to activate, made it so that clan mixing was rarely done.

The Legion era

With the introduction of Legion in Booster Set 16: Legion of Dragons & Blades, the strategy of mixing clans, which was once rarely done, suddenly and unexpectedly became extremely powerful. To keep the power level of these decks under control, and to prevent further situations like this from occurring again, the Clan Fight regulation was implemented in February 2015. Clan-based restrictions and penalties within cards' abilities became unnecessary as a result, and soon afterward began to be no longer printed on cards.

Extreme Fight regulation introduced

The Extreme Fight regulation was created at the same time so that players who still wanted to play multi-clan decks could still do so. However, there have never been any official tournaments that have used the Extreme Fight regulation, and it is rarely played in practice.

See Also

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