One Piece ST-03 The Seven Warlords of the Sea: Blockers and Choosing What Deserves Protection
The Warlords starter asks a question that remains useful long after the first match: which opposing attack is worth stopping? A defensive card has value because of what it preserves.
What this product is
ST-03 is The Seven Warlords of the Sea, released in English on December 2, 2022. A constructed 51-card deck, ten DON!! cards, and a playsheet.
The 51-card deck count includes its Leader and fifty main-deck cards. The DON!! cards are separate. One complete starter supplies one player’s deck; a two-person learning match needs another complete setup. Random bonus cards, where included, are separate from the fixed learning deck.
How to approach the deck
The official product description emphasizes Blocker Characters and control over opposing movements. Play with a purpose for each blocker: protect your remaining Life, preserve a Character that drives your plan, or force the opponent to spend an additional attacker. Announce the attack target before deciding to block. A low-value attack can be bait for the defensive resource needed against a later threat. Keeping a Character alive also matters more when you have a credible use for it next turn.
A useful teaching exercise
Give the opponent two eligible attackers of different power. Declare both possible attack orders before playing them out. For each order, choose whether to take damage, counter, or use a Blocker. Then reveal your intended next turn and ask whether the defense preserved the cards needed to execute it. Keep a note of the attack where an early block left the later one unanswered.
Who should compare it?
Consider it if you enjoy measured defense and the Warlord theme. It is more engaging when both players explain attack order instead of treating defense as an automatic response.
One mistake to avoid
A Blocker is a resource, not a permanent shield. Check the timing, its active state, and any effect that prevents blocking before relying on it.
Before buying or upgrading
Match the exact product code and English language in the selected offer. Compare a sealed package with any deck-only resale by the contents actually included. If you want a particular upgrade, price the eligible singles before opening boosters in pursuit of it. Use the current event rules and restriction list for organized play; an old release-date legality note is not a current eligibility guarantee.
Browse the One Piece guide hub · Learn your first game
Sources: Bandai English product details and card-list links · Current rules and restrictions. Checked October 23, 2026. B3’s practice exercise and buying assessment are editorial guidance, without a claim of firsthand playtesting.
Where to buy
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Check the English ST-03 starter deck on Amazon
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