A One Piece deck is four counts and one filter. One Leader card, exactly 50 cards, no more than four copies of any card number, and exactly 10 DON!! cards — with every card in the deck restricted to the colours printed on the Leader. Everything else about deck building is a consequence of those five sentences, and all of them are in Bandai’s own rules rather than in community convention.
Quick answer
A legal One Piece deck is 1 Leader card plus exactly 50 cards plus exactly 10 DON!! cards, where the 50 contain only cards whose colour appears on the Leader, and no card number appears more than four times. The Leader and the DON!! cards are not part of the 50. Any single card in the deck may be swapped for another, but the total stays at 50 — there is no range.
These are tournament-legal construction rules, not house rules. No price is printed on this page; what follows is quoted from the sources at the bottom.
The four counts
| Component | Required count | What it may contain |
|---|---|---|
| Leader | Exactly 1 | Any Leader card. Its colours restrict the rest of the deck. |
| Deck | Exactly 50 | Character, Event and Stage cards only. |
| Copies per card | No more than 4 | Four of the same card number, not the same name. |
| DON!! deck | Exactly 10 | Any officially sold or distributed DON!! cards. |
That table is the whole of the construction rule. The rest of this page explains what each line actually constrains, because three of the four are read wrongly more often than they are read correctly.
Rule one: exactly one Leader, and it is a filter
A Leader is not a card in the deck. It sits in its own area, face up, from before the first turn, and it is the card the opponent attacks. It is also the card that decides what everything else is allowed to be.
The rule is that only cards whose colour appears on the Leader may be included, and cards of a colour the Leader does not have cannot be included at all. A Red Leader means a Red deck. A Red/Green Leader means a deck built from Red cards and Green cards, mixed in any proportion you like — there is no requirement to play both evenly, or at all beyond what you choose to include.
This is why the Leader is the first decision and not the last. Changing it changes the legality of every other card in the pile, not just its own effect. The colour mechanics themselves are set out on what a Leader decides, and the pool of two-colour Leaders is counted on multicoloured Leaders. What the Leader’s printed life total does to the 50 is below.
Rule two: exactly fifty, and no range
The deck is made of exactly 50 cards, and those cards are Character, Event and Stage cards. Leader cards and DON!! cards are never part of that 50 — they are separate piles with their own counts.
The word that matters is exactly. Some card games set a minimum, or a range with a lower and an upper bound. One Piece sets a number. A 49-card deck and a 51-card deck are both illegal, and there is no competitive reason to want either, because the 50 is not a limit you are trying to squeeze under — it is the deck.
The consequences run through everything else. Because the deck is fixed, every card you add is a card you removed. There is no filler slot and no flex space: a 50-card deck with four copies of ten different cards is a complete deck, and adding an eleventh idea means deleting one of the ten.
Rule three: four per card number, not per name
No more than four cards with the same card number. That sounds like the usual copy limit until you notice which word it uses.
Card number means the code printed on the card — OP01-025, ST10-002, P-041. Two different cards of the same character have two different numbers and are two different cards, four of each being legal. The reverse is also true and catches people out: an alternate art printing of a card shares its number with the plain version, so four copies in total, however they look. A parallel treatment is not a fifth copy.
This is where the One Piece rule differs most sharply from its closest competitor. Yu-Gi-Oh limits copies by card name rather than by card number, which makes a reprint of the same card a different card for deck-building purposes; that difference, and the deck size range that goes with it, is worked through on Yu-Gi-Oh deck sizes and copy limits.
One more layer sits on top. A card whose own text changes the construction rules replaces them — the comprehensive rules treat deck-construction effects as permanent effects that override the normal limits. If a card says you may include more than four of something, it may. That is the only route around the four-copy limit.
Rule four: ten DON!!, and they are not deck cards
The DON!! deck is exactly 10 cards. They are not shuffled into the 50, they are not drawn as part of a hand, and they do not count against the copy limit in the same way, because every DON!! card is functionally the same card. Any officially sold or distributed DON!! card may be used, and the rules allow them in any language.
DON!! is the resource. Playing a card means resting the number of active DON!! equal to its cost, which is where the cost values on Character cards become a deck-building constraint rather than trivia: a deck of nothing but ten-cost cards cannot play anything until turn ten. The distribution of costs and powers across the pool is measured on power and counter.
The DON!! deck is also the one part of the deck that is not a choice. Ten cards, identical in function, no decision to make. Everything you can express as a builder is expressed in the 50.
Life comes out of the fifty
A detail that changes how the 50 feels in play: the life cards are dealt from the top of the deck, face down, before the game starts. The number dealt is the life printed on the Leader.
So the 50 is not 50 cards available to draw. It is 5 cards in your opening hand, plus a number of life cards equal to your Leader’s life, plus whatever is left in the deck — and that leftover pile is what you lose when it reaches zero. A five-life Leader starts with 40 cards left to draw; a four-life Leader starts with 41.
Which is why the shape of the Leader pool matters here and not only in play. Life is a deck-building quantity as much as a combat one, and the difference between a 5-life and a 4-life Leader is a card in your hand at some point in the game.
Setting up: the order, and the one asymmetry
Construction rules are followed by a fixed preparation sequence, and one step in it is different for the player who goes first.
- Both players present their decks, which must be legal at that point.
- Shuffle thoroughly and place the deck face down in the deck area.
- Place the Leader card face up in the Leader area, and the 10 DON!! cards face down as the DON!! deck.
- Decide who chooses turn order, by rock-paper-scissors or another method. The winner chooses to go first or second.
- Draw an opening hand of 5 cards.
- Each player may mulligan once: return the whole hand to the deck, shuffle, and draw 5 new cards. The first player chooses first.
- Place life cards equal to the Leader’s life from the top of the deck face down, without looking at them.
- The first player begins.
The asymmetry is in the draw step: the player who takes the first turn does not draw a card on that turn. Every later turn, both players draw one.
Two limits on the field are worth knowing before you build, because they change what a 50-card deck should contain. A player may have a maximum of 5 Characters in play and a maximum of 1 Stage; playing a sixth Character means trashing one already in play. A deck built entirely from cards that want to sit on the board will spend the game replacing itself.
How a game ends
Two conditions, and both are worth having in mind while building. A player wins when their opponent’s Leader takes damage after their Life has already been reduced to zero. And a player wins when the opponent’s deck reaches zero cards — at the moment the deck is empty, all effects are cancelled and the player with no deck loses.
That second condition is why the leftover pile above is a resource with a clock on it. Every card drawn, and every life card taken as damage, moves the deck closer to empty. A deck that draws hard is spending a resource it cannot get back.
Common construction mistakes
- Counting the Leader in the 50. It is a separate card in a separate area. 1 Leader plus 50, not 50 including the Leader.
- Counting the DON!! deck in the 50. Same error, one pile further along. 10 DON!! is a third pile.
- Treating the limit as three copies. It is four, and it is four per card number, so two characters with two numbers each give you eight cards.
- Treating alternate art as extra copies. It shares a number, so it shares the limit.
- Assuming a two-colour Leader must play both colours evenly. The rule is that cards must be inside the Leader’s colours, not that every colour must be used.
- Building to 51 or 49. There is no range to sit inside.
For the physical side of a finished deck — how to protect 50 cards and store them — see sleeves and holders for One Piece cards. If you would rather start from a deck that is already legal, the starter deck list covers the products that arrive as a complete deck in one box.
Related reading
- What the One Piece Card Game is — the four card types these rules refer to.
- Leaders explained — the card that filters the other 50.
- The shape of the Leader pool — life, power and colour across all 142 Leaders.
- Dragon Ball deck building basics — the same construction questions answered for a different Bandai game.
Frequently asked questions
How many cards are in a One Piece deck?
Exactly 50, made up of Character, Event and Stage cards. The Leader card and the 10 DON!! cards are separate piles and are not part of the 50. There is no range: 49 and 51 are both illegal.
How many copies of the same card can I put in a One Piece deck?
Four, and the limit is per card number rather than per card name. Two different cards of the same character have different numbers, so four of each is legal. Alternate art of a card shares its number, so it counts toward the same four.
Does the Leader card count toward the 50?
No. A Leader is a separate card in its own area, face up from before the first turn. A legal deck is 1 Leader plus exactly 50 cards plus 10 DON!! cards, three separate piles.
Can a One Piece deck use two colours?
Yes, if the Leader prints both. The rule is that every card in the deck must be a colour the Leader has; a Red/Green Leader may play Red cards and Green cards in any proportion. A single-colour Leader cannot include cards of any other colour.
How many DON!! cards go in the DON!! deck?
Exactly 10. They are not shuffled into the 50 and are not part of the deck that can run out. Any officially sold or distributed DON!! cards may be used, and the rules allow them in any language.
Sources
Sources and method
- ONE PIECE CARD GAME Comprehensive Rules, section 5-1 (Preparing Leader Cards, Decks, and DON!! Decks): 5-1-2 requires exactly 1 Leader card, a 50-card deck and a 10-card DON!! deck; 5-1-2-1 defines the deck as Character, Event and Stage cards; 5-1-2-2 restricts the deck to colours on the Leader; 5-1-2-3 sets the four-card limit by card number; 5-1-2-4 makes deck-construction effects overriding. en.onepiece-cardgame.com/pdf/rule_comprehensive.pdf
- ONE PIECE CARD GAME Official Rule Manual, “Decks” and “Preparation to Play”: the 1 / 50 / 10 counts, the opening hand of 5, the single mulligan, life cards dealt from the top of the deck, and the note that the first player does not draw on their first turn. asia-en.onepiece-cardgame.com/pdf/manuel_en.pdf
- Same Rule Manual, area descriptions: a maximum of 5 Characters and a maximum of 1 Stage in play; victory conditions and the rule that a player with 0 cards in their deck loses.
- Deck construction as restated for tournament play, including that any officially distributed DON!! cards may be used and that DON!! cards of any language are permitted: ONE PIECE CARD GAME Championship rules document, asia-en.onepiece-cardgame.com/pdf/rule_championship2024_world_final.pdf
- Where card text and the rules disagree, the card text takes priority, per the Rule Manual’s own note at the head of its rules section. Card counts quoted elsewhere on this page come from the official card database as at 2026-10-20.
Where to go next
- The CardSpicy card index — every card we track, with its PSA 10 population and market history (195 cards).
- The illustrator index — every artist behind those cards, card by card (110 artists).
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