Rules & FundamentalsBeginner25 min read

One Piece TCG Rules: Blockers, Counters, Decks & Mulligans

How Blockers work (and why a rested Character can't block), Counters, deck building rules and the mulligan in One Piece TCG, checked against Bandai's rules.

By Cardboard2 Team•Published December 1, 2025•Updated October 27, 2026
#Rules #Beginner #Fundamentals #How To Play

Straight answers to the One Piece TCG rules questions players ask most (Blockers, Counters, deck building and the mulligan), followed by the full basics: setup, the five phases of a turn, Rush, Triggers, Life and the trash. Rules are checked against Bandai's official Comprehensive Rules (v1.2.1) and cited by section number, for example (CR 10-1-4-1).

How do Blockers work in One Piece TCG?

Short answer: When your opponent attacks your Leader or one of your Characters, you can rest an active Character that has [Blocker] to make it the new target of that attack. You can use only one Blocker per battle, and you can still use Counters afterward (CR 10-1-4-1, 7-1-2-1).

In the rules' words, the [Blocker] card "takes the place of the card being attacked." The battle is then fought against the Blocker instead of the original target.

Can you block with a rested Character?

No. You activate [Blocker] by resting the Blocker card, so it has to be active (upright) when the attack comes in (CR 10-1-4-1).

This matters most for Characters that attacked on your turn. Attacking rests a Character (CR 7-1-1-1), and it only becomes active again in your next Refresh Phase (CR 6-2-4), so it stays rested through your opponent's whole turn and can't block. Your opponent can also attack only your Leader or your rested Characters (CR 7-1-1-2), which means a Character that attacked is open to attack and can't protect anything. Another active Blocker can still block for it.

A Character you played this turn can block on your opponent's turn. The "can't attack the turn it's played" rule only limits attacking (CR 3-7-4).

Can a Blocker protect a Character, or only your Leader?

Both. [Blocker] can be used whenever one of your other cards is being attacked, whether that's your Leader or a Character (CR 10-1-4-1). Since your opponent can only attack your Leader or your rested Characters, in practice you block for your Leader or for a rested Character.

A Blocker can't block an attack aimed at itself, because the rule says "other cards."

How a block plays out, step by step

  1. Attack Step: Your opponent rests their active Leader or a Character to attack, targeting your Leader or one of your rested Characters. [When Attacking] effects activate (CR 7-1-1).
  2. Block Step: You may rest one active [Blocker] Character. It becomes the target, and its [On Block] effects activate (CR 7-1-2).
  3. Counter Step: You may still use Counters, including on the Blocker (CR 7-1-3).
  4. Damage Step: If the attacker's power is greater than or equal to the Blocker's power, the Blocker is K.O.'d and goes to the trash. If it's lower, nothing happens (CR 7-1-4). Either way, your Leader takes no damage from that attack.
  5. A Blocker that survives stays rested until your next Refresh Phase.

Blocker rules at a glance

  • The Blocker must be active, and using it rests it (CR 10-1-4-1)
  • One [Blocker] per battle, so you can't stack two Blockers on one attack (CR 7-1-2-1)
  • Works on attacks against your Leader or your Characters (CR 10-1-4-1)
  • Counters still work after you block, because the Counter Step comes after the Block Step (CR 7-1-3)
  • Attackers with [Unblockable] can't be blocked (CR 10-1-7-1)
  • If the Blocker loses the battle it is K.O.'d, not your Leader damaged (CR 7-1-4-1-2)

When to Block

Block When:

  • Damage would be lethal
  • You have expendable blockers
  • Opponent invested heavily (lots of DON!!)
  • Your blocker would survive anyway

Don't Block When:

  • You have life to spare
  • Blocker is more valuable than life
  • You'd rather take the Life card into your hand (or hit a [Trigger])

How do Counters work in One Piece TCG?

Short answer: When your opponent attacks, there's a Counter Step where you can trash Character cards from your hand to add their Counter value to your Leader or one of your Characters for that battle. You can also pay for and use Event cards marked [Counter]. The attacker wins ties, so you need to finish strictly higher than the attacker's power (CR 7-1-3, 7-1-4-1).

How Countering Works

The battle rule: The attacker wins if its power is greater than or equal to the defender's power. Ties go to the attacker (CR 7-1-4-1).

Example:

  • Attacker: 7000 power
  • Defender (your Leader): 5000 power

No Counter: 7000 >= 5000, so the attack succeeds and you take 1 damage.

Trash one Counter +2000 card: Your Leader is at 7000. That's a tie, and the attacker still wins.

Trash a Counter +2000 and a Counter +1000: Your Leader is at 8000. 7000 < 8000, so the attack fails and nothing happens.

Counter Rules

  1. Counters are used only in the Counter Step of your opponent's attack (CR 7-1-3, 10-2-4-1)
  2. The Counter value printed on a Character card is used by trashing that card from your hand (CR 2-10-2, 7-1-3-1-1)
  3. [Counter] Event cards cost DON!!: pay the cost, trash the Event, and resolve its effect (CR 7-1-3-1-2). You pay with active DON!! in your cost area, so DON!! you leave active at the end of your turn are what you have for Counter Events.
  4. Use as many Counters as you like, in any order (CR 7-1-3-1)
  5. A Counter boost lasts for that battle only (CR 7-1-3-1-1)
  6. If a card shows more than one Counter value, only the highest applies (CR 2-10-4)

Counter Strategy

When to Counter:

  • When you'd take lethal damage
  • When opponent invested heavily (lots of DON!!)
  • When the Counter card isn't useful otherwise

When NOT to Counter:

  • You have life to spare
  • Counter card is more valuable played
  • Attack is too big to counter efficiently

What are the deck building rules in One Piece TCG?

Short answer: A legal deck is exactly 1 Leader, a 50-card deck and a 10-card DON!! deck. The deck can only contain cards whose colors are on your Leader, and no more than 4 cards with the same card number (CR 5-1-2).

Deck Requirements

  • Leader: exactly 1
  • Deck: exactly 50 cards, made up of Character, Event and Stage cards (CR 5-1-2-1)
  • DON!! deck: exactly 10 DON!! cards
  • Copies: no more than 4 cards with the same card number (CR 5-1-2-3)
  • Some cards have their own deck-building text, and that text replaces these rules for that card (CR 5-1-2-4)
  • No side decks at official events (TRM 2.4)

Color Rules

Your deck can only include cards of colors on your Leader (CR 5-1-2-2).

  • One-color Leader (e.g. red): only red cards.
  • Two-color Leader (e.g. red/green): red cards, green cards, and red/green cards.

A multicolor card counts as every one of its colors (CR 2-3-5), so all of its colors must be on your Leader. A red/blue card can't go in a red/green Leader's deck.

The 4-copy rule counts card numbers, not names

The limit is 4 cards with the same card number (CR 2-14-2, 5-1-2-3), not 4 cards with the same name. Two Characters with the same name but different card numbers are different cards for this rule, so you can play up to 4 of each.

Building a Balanced Deck

These are common starting ratios, not rules:

  • Low Cost (0-3): 16-20 cards - Early plays, Counter cards, searchers
  • Mid Cost (4-6): 16-20 cards - Core threats, value characters, removal
  • High Cost (7-10): 8-12 cards - Finishers, game-ending threats
  • Events: 6-10 cards - Removal, protection, card advantage

Counter Distribution:

  • +2000 Counters: 8-12 cards
  • +1000 Counters: 4-8 cards
  • More Counters = More defensive

How does the mulligan work in One Piece TCG?

Short answer: After drawing your 5-card opening hand, you may redraw once: put your whole hand back into your deck, shuffle, and draw 5 new cards. You can't keep part of the hand, and the new hand is final. The player going first decides first (CR 5-2-1-6).

Your Life cards are dealt from the top of your deck only after both players have decided on mulligans (CR 5-2-1-7).

Mulligan Decision Framework

Keep hands that:

  • Have cards you can play turns 1-3
  • Advance your gameplan
  • Have at least 1-2 Counter cards
  • Include key cards for your strategy

Mulligan hands that:

  • Are all expensive cards (6+ cost)
  • Have no playable early cards
  • Don't fit your deck's strategy
  • Are missing critical pieces

Mulligan Examples

Aggro Keep:
1-cost, 2-cost, 3-cost, 4-cost, Event
✓ Great curve, can pressure immediately

Aggro Mulligan:
5-cost, 6-cost, 7-cost, 8-cost, Event
✗ Can't play anything until turn 5

Control Keep:
2-cost blocker, 4-cost removal, 5-cost, Counter, Counter
✓ Early defense, answers to threats

Game Setup & Zones

Before your first game, learn where cards go (CR 3).

The Playmat Zones:

  • Leader Area: your 1 Leader, face-up
  • Character Area: up to 5 Characters. To play a 6th, you trash one that's already there (CR 3-7-6)
  • Stage Area: up to 1 Stage card. Playing a new one trashes the old one (CR 3-8-5)
  • Cost Area: your DON!! cards. You rest active DON!! here to pay costs
  • Life Area: face-down Life cards, as many as your Leader's Life value
  • DON!! Deck: your 10 DON!! cards
  • Deck: your 50-card deck, face-down
  • Trash: face-up discard pile
  • Hand: the cards you've drawn

Initial Setup

  1. Shuffle your deck and place it face-down, then place your Leader face-up in the Leader Area (CR 5-2-1-2, 5-2-1-3)
  2. Use rock-paper-scissors (or another method) to decide which player chooses to go first or second (CR 5-2-1-4)
  3. Draw 5 cards. Starting with the player going first, each player may mulligan once (CR 5-2-1-6)
  4. Place cards from the top of your deck face-down in your Life Area equal to your Leader's Life value (CR 5-2-1-7)
  5. The player going first starts their turn (CR 5-2-1-8)

Important:

  • The player going first doesn't draw on their first turn and gets only 1 DON!! that turn (CR 6-3-1, 6-4-1)
  • Neither player can attack on their own first turn (CR 6-5-6-1)

The Turn Structure

Every turn has five phases, in order (CR 6-1-1):

1. REFRESH → 2. DRAW → 3. DON!! → 4. MAIN → 5. END

Refresh Phase

Effects that last "until the start of your next turn" end. All DON!! given to your Leader and Characters return to your cost area rested, and then all your rested cards become active: Leader, Characters, Stage and DON!! (CR 6-2).

Key Point: This isn't optional. You can't choose to keep cards rested.

Draw Phase

Draw 1 card. The player going first skips this on their first turn (CR 6-3-1).

DON!! Phase

Place 2 DON!! from your DON!! deck into your cost area. The player going first places only 1 on their first turn (CR 6-4-1).

  • Turn 1 (going first): 1 DON!!
  • Turn 1 (going second): 2 DON!!
  • After that: 2 DON!! per turn

Without DON!!-ramp effects, the player going second has all 10 DON!! on their 5th turn and the player going first on their 6th.

Main Phase

You can do these in any order, as many times as you want (CR 6-5-2):

A. Play cards - Play Characters and Stages from your hand by resting active DON!! equal to their cost. A Character can't attack the turn it's played unless it has Rush (CR 2-7-2, 3-7-4).

B. Use Events - For an Event marked [Main], pay its cost, trash it, then resolve its effect (CR 2-7-3).

C. Give DON!! - Put an active DON!! from your cost area under your Leader or a Character. Each one gives +1000 power during your turn (CR 6-5-5).

D. Attack - Rest your active Leader or a Character to attack your opponent's Leader or one of their rested Characters (CR 7-1).

E. Activate effects - Use [Activate: Main] effects (CR 6-5-4). [On Play] effects aren't something you choose to use. They activate automatically when the card is played (CR 10-2-6).

End Phase

[End of Your Turn] effects activate, effects that last "until the end of the turn" end, and your opponent's turn begins (CR 6-6).

Hand size: The End Phase has no hand-size check, so you can keep as many cards as you like.

Understanding Rush

[Rush] lets a Character attack during the turn it's played (CR 10-1-1-1). Normally a Character can't attack until your next turn (CR 3-7-4).

[Rush: Character] is a narrower version: on the turn it's played, the Character can attack your opponent's Characters (CR 10-1-6-1).

Why Rush is Strong

Without Rush:

  • This turn: Play a 4-cost character
  • Next turn: It can finally attack

With Rush:

  • This turn: Play a 4-cost Rush character and attack immediately
  • Next turn: Attack again

Rush gives you an extra attack!

Rush Strategy

Offensive Use:

  • Apply immediate pressure
  • Finish games faster
  • Punish opponents who tap out

Defensive Use:

  • Rush characters can attack rested enemy characters immediately
  • Remove a threat before it attacks again

Remember: Rush only matters on the turn the Character is played. After that it attacks like any other Character.

Triggers & Effects

Effects are the heart of One Piece TCG strategy. Understanding when they activate is crucial.

Effect Timing Categories

  • [On Play]: when the card is played (CR 10-2-6)
  • [When Attacking]: when you declare an attack with it (CR 10-2-5)
  • [On Block]: when you activate its [Blocker] (CR 10-2-15)
  • [On Your Opponent's Attack]: when your opponent declares an attack (CR 10-2-16)
  • [On K.O.]: when it is K.O.'d (CR 10-2-17)
  • [End of Your Turn]: during your End Phase (CR 10-2-7)
  • [Activate: Main]: you choose to use it during your Main Phase, outside of battle (CR 10-2-2)
  • [Main] / [Counter]: Event timing. [Main] is used in your Main Phase, [Counter] in your opponent's Counter Step (CR 10-2-3, 10-2-4)
  • [Trigger]: when the card comes off your Life because of damage (CR 10-1-5)
  • [DON!! xX]: only while the card has X or more DON!! given to it (CR 8-3-2-3)
  • [Once Per Turn]: can be activated and resolved only once per turn (CR 10-2-13)

Trigger Effects (Life Triggers)

When your Leader takes damage, you take the top card of your Life. If it has [Trigger], you may reveal it and activate the Trigger instead of adding the card to your hand. The card then goes to the trash unless the effect says otherwise. If you don't activate it, add it to your hand without revealing it (CR 10-1-5).

If the attacker has [Banish], the Life card is trashed and its Trigger can't be activated (CR 10-1-3).

Common [Trigger] effects:

  • Play this card - put the Character into play
  • Draw - draw a card (some draw 2 and then trash 1)
  • Removal - K.O. or rest one of your opponent's Characters with a low cost
  • Power - give your Leader or a Character +1000 power during this turn
  • Activate this card's [Main] effect - use the Event's [Main] effect

Mandatory vs Optional

Effects with "can" or "may" are optional. Effects without those words must be carried out as far as possible (CR 8-1-2).

Mandatory:
[On Play] Draw 1 card. → You MUST draw when it's played

Optional:
[On Play] You may draw 1 card. → You CHOOSE whether to draw

Life Cards & How You Lose

Your Life is both a resource and the clock on the game.

  • Starting Life = your Leader's Life value (CR 2-9-2)
  • Life cards are face-down, and neither player can look at them (CR 3-10-2)
  • Each point of damage moves your top Life card to your hand (CR 4-6-2)
  • [Double Attack] deals 2 damage instead of 1 (CR 10-1-2)
  • You lose when your Leader takes damage while you have 0 Life cards, or when your deck has 0 cards (CR 1-2-1-1)

Life as a Resource

Life = Free Cards

When you take damage, you gain a card. This is actually valuable!

Scenario:

  • You: 4 life, 3 cards in hand
  • Take 2 hits: 2 life, 5 cards in hand
  • You traded life for cards!

Sometimes this is the correct play.

Life Card Strategy

Taking Damage Intentionally:

  • Gain cards when hand is low
  • Hope for Trigger effects
  • Save Counter cards for later
  • Don't waste blockers on small attacks

Protecting Life:

  • When at 1-2 life, protect everything
  • Lethal damage means game over
  • Block and Counter aggressively at low life

The Trash (Discard Pile)

The trash is where K.O.'d Characters, used Events and trashed cards go (CR 3-5-1).

What Goes to the Trash

  • A K.O.'d Character (CR 10-2-1)
  • An Event, as you use it (CR 2-7-3)
  • Character cards trashed from your hand for their Counter value (CR 7-1-3-1-1)
  • A Character you trash to make room for a 6th (CR 3-7-6-1)
  • A Life card after its [Trigger] resolves, unless the effect says otherwise (CR 10-1-5-3)
  • Cards trashed by effects

Trash Rules

  1. The trash is public. Either player can look through both trashes, including their order, at any time (CR 3-5-2)
  2. You may reorder your own trash freely. New cards go on top (CR 3-5-2)
  3. Cards in the trash can come back through card effects

Strategic Trash Management

Track your Trash:

  • Know what Counters you've used
  • Know what threats are gone
  • Know what you can retrieve

Track opponent's Trash:

  • What answers have they used?
  • What threats are already dealt with?
  • What's left in their deck?

Discovering Synergies

Synergies are how cards work together to become stronger than the sum of their parts.

Synergy = Cards that make each other better

Finding Synergies

Step 1: Read Card Text Carefully
Look for keywords and conditions:

  • "When you [action]..."
  • "If you have [condition]..."
  • "For each [thing]..."
  • Cards with a {Type}, such as {Straw Hat Crew}

Step 2: Identify Themes
Common synergy themes:

  • Type Synergies: Cards that boost {Straw Hat Crew}
  • Color Synergies: Effects that care about card colors
  • Action Synergies: "When you draw" + draw effects
  • Stat Synergies: Power boosts that stack

In card text, { } braces name a type and [ ] brackets name a card (CR 2-1-2, 2-4-3).

Common Synergy Patterns

Pattern 1: Type
Cards that care about {Straw Hat Crew}:

  • "All {Straw Hat Crew} gain +1000"
  • "If you have 3+ {Straw Hat Crew}..."
    Build deck with mostly that type!

Pattern 2: Engine + Payoff
Engine: Cards that do an action repeatedly (draw, search)
Payoff: Cards that reward that action ("When you draw, +1000")

Pattern 3: Setup + Finisher
Setup: Ramp DON!!, draw cards, control board
Finisher: Big Rush attackers that close the game

Finding Your Win Condition

Every deck needs a plan to win. This is your win condition.

Win Condition = The specific way your deck wins games

You win when your opponent's Leader takes damage while they have 0 Life cards, or when they run out of deck (CR 1-2-1-1). But HOW do you get there? That's your win condition.

Common Win Conditions

1. Aggressive Beatdown
Plan: Attack every turn, kill by turn 5-6
Cards: Low-cost characters, Rush, direct damage

2. Board Control
Plan: Remove their threats, win with superior board
Cards: Removal events, efficient characters, value

3. Big Finishers
Plan: Survive early, play massive threats late
Cards: Ramp, defense, 8-10 cost bombs

4. Combo
Plan: Assemble specific cards, execute combo
Cards: Search effects, combo pieces, protection

Identifying Your Deck's Win Condition

Ask yourself:

  1. What cards win me the game?
    Look at your biggest threats and finishers

  2. How do I get to that point?
    What setup and resources do I need?

  3. What stops me from winning?
    What answers exist? What's my backup plan?

Going to Your First Local

Local game stores (LGS) host One Piece TCG events. Here's what to expect.

Finding a Local

Where to Look:

  • Cardboard2 LGS Finder (cardboard2.com/lgs)
  • Bandai's official event listings and the Bandai TCG+ app
  • Facebook groups for your area
  • Ask at nearby game stores

What to Bring

For official Bandai events (TRM 2.4):

  • A legal deck: 1 Leader, 50 cards, 10 DON!!
  • Main deck in opaque, identical sleeves. Leader and DON!! sleeved or unsleeved so they look different from your deck
  • Extra sleeves, a pen for result slips, and any dice or counters your deck needs
  • Your Bandai TCG+ account and the entry fee, if there is one
  • Photo ID if asked (required at age-limited or invitational events, TRM 2.3)

Also nice to have:

  • Playmat
  • Water and snacks
  • Trade binder (if you want to trade)

What to Expect

Before the Event:

  1. Arrive 15-30 minutes early
  2. Register and pay the entry fee, if any
  3. Find a seat and socialize
  4. Wait for pairings

During Rounds:

  1. Pairings announced
  2. Find your opponent
  3. Play your match. In Bandai's Tournament Rules Manual, standard rounds are best-of-one (30 minutes + 5 minutes extra time), and top cut is best-of-three (TRM 3.5). Ask your store how they run it.
  4. Report results to organizer
  5. Wait for next round

After the Event:

  1. Prizes distributed
  2. Trade with other players
  3. Get feedback on your deck

Tournament Etiquette

Do:

  • Greet your opponent
  • Communicate clearly
  • Ask before touching their cards
  • Call a judge if confused
  • Shake hands after

Don't:

  • Rush your opponent
  • Get angry at bad luck
  • Accuse of cheating (call judge instead)
  • Be a sore winner or loser

Tips for Your First Event

  1. Tell people you're new - They'll help you
  2. Ask questions - Better than making mistakes
  3. Don't worry about winning - Focus on learning
  4. Take notes - What worked? What didn't?
  5. Have fun - It's a card game, enjoy it!

Key Takeaways

After reading this guide, you should understand:

  • ✓Blockers redirect an attack on your Leader or a Character, but only while active (a rested Character can't block)
  • ✓Counters are used in your opponent's Counter Step, and ties go to the attacker
  • ✓Deck building: 1 Leader, 50 cards, 10 DON!!, max 4 per card number, Leader's colors only
  • ✓Mulligan: one full redraw of 5 cards, with the player going first deciding first
  • ✓All game zones and where cards go during play
  • ✓The turn structure: Refresh → Draw → DON!! → Main → End
  • ✓How Rush lets characters attack immediately
  • ✓A [Trigger] is activated instead of adding that Life card to your hand
  • ✓You lose at 0 Life when your Leader takes damage, or with 0 cards in your deck
  • ✓How to identify synergies between cards
  • ✓How to find and execute your win condition
  • ✓What to expect at your first local tournament

Put These Concepts Into Practice

Build decks and track your games to see these strategies in action.