Limit means a number of copies of a card allowed in your Main Deck, Side Deck and Fusion Deck combined to used in play.
Limit is divided into some statuses:
- Unlimited: You can use the maximum of 3 copies of a card allowed n your Main Deck, Side Deck and/or Exta Deck combined.
- Semi-Limited: You can use the maximum of 2 copies of a card allowed n your Main Deck, Side Deck and Fusion Deck combined.
- Limited: You can only have one card in total with this card's name in your Main Deck, Side Deck, and Fusion Deck combined.
- Forbidden: No cards of that name can be used in your Main Deck, Side Deck or Fusion Deck.
- Legal: Legal cards are cards that can be played during Duels. Legal cards include cards that are Forbidden, Limited, Semi-Limited, Unlimited and Token Monsters. Any other cards are considered Illegal.
- Illegal: If a card is Illegal, it means it cannot be used in the official card game at all, not in tournaments, not anywhere. The only exception to this is friendly duels where both duelists agree on the Illegal cards in question in terms of their effects. It should also be noted that all fan-made and counterfeit cards are also Illegal.