One Piece Card Game OP-17: The World's Strongest Warriors — 4th Anniversary Set Goes Global Simultaneously
By TCG Listing · 10 Jun 2026
OP-17 'The World's Strongest Warriors' lands in August 2026 as the game's 4th anniversary booster — and for the first time ever, English and Japanese editions drop on the same day.
The One Piece Card Game is marking its fourth year in style. Bandai has officially revealed OP-17: The World's Strongest Warriors, the landmark anniversary booster set scheduled for release on 28 August 2026 — and it comes with a headline that collectors across the UK have been waiting for.
A First: Global Simultaneous Release
Starting with OP-17, Bandai is launching the English and Japanese editions of the set on the same day worldwide. For UK players, this is a genuinely significant shift. Until now, English sets have consistently arrived weeks after the Japanese release, meaning Japanese-language spoilers and secondary-market prices could shape — and sometimes inflate — English pre-order demand before a single pack was cracked locally. With parity day-one, the competitive and collecting playing field levels out considerably. Expect UK pre-orders to move quickly once retail listings go live.
What's in the Set?
OP-17 is confirmed to contain 126+1 card types, broken down as follows:
- 6 Leaders
- 45 Commons
- 30 Uncommons
- 26 Rares
- 10 Super Rares
- 2 Secret Rares
- Alternative art and parallel design cards across rarities
The set was first unveiled during the Championship 2025–26 season, and Bandai has confirmed it carries heavy thematic weight as a 4th anniversary release. Anniversary sets in the One Piece TCG — such as OP-09 and OP-13 — have historically produced some of the most sought-after chase cards in the game's short history, so expectations are understandably high.
Elbaf Arc and the Rocks Pirates Take Centre Stage
Thematically, OP-17 draws from two of the most exciting corners of the One Piece universe right now. The Elbaf arc — currently running in the manga and anime — brings giant-island characters into the card game, with Loki among those confirmed to feature. Alongside them, the legendary Rocks Pirates make their TCG appearance, a crew that includes some of the most powerful characters in the entire One Piece lore.
For competitive players, the arrival of new Leaders tied to these factions could shake up the meta significantly. Elbaf-based Giants and high-cost Rocks Pirates characters suggest a playstyle built around raw power and board presence — a contrast to some of the faster, effect-heavy decks currently dominating the format.
Why This Set Matters for UK Collectors
Anniversary boosters in the One Piece TCG carry a track record of producing high-value pulls and collectible alternate-art cards. The shift to global simultaneous release also means the UK secondary market for OP-17 singles will form organically — without the weeks-long lag that previously allowed Japanese prices to set the ceiling. Whether you're a competitive grinder looking for new Leaders or a collector hunting Secret Rares, OP-17 is shaping up to be the most important One Piece release of 2026.
With 28 August not far off, now is a good time to keep an eye on pre-order listings and lock in a box or two before demand peaks at release.