Bandai has published a full rarity breakdown for OP-18 ahead of its November 2026 release, and the numbers are worth understanding before you decide how much product to buy.
The set includes 127 total card types spread across nine rarity tiers, from Common all the way up to a single Treasure Rare.
Knowing exactly how those numbers break down changes how you should think about box odds, singles budgeting, and where to focus your collecting energy.
Here is the full published breakdown and what each tier realistically means for collectors.
OP-18's rarity list includes 6 Leader, 45 Common, 30 Uncommon, 26 Rare, 10 Super Rare, 2 Secret Rare, 6 Special Card, 1 Treasure Rare, and 1 DON!! card, totaling 127 card types across the set.
That distribution is broadly consistent with recent One Piece TCG main booster sets, though the Secret Rare count of just two sits toward the lower end of what recent sets have offered.
Common and Uncommon cards together make up 75 of the set's 127 total card types, forming the structural core of most decks built from the set.
These are the cards you will see most often across your 24 packs, and they are worth paying attention to for playable value even though they carry little collector premium individually.
With 26 Rare and 10 Super Rare cards, this mid-tier band is where most of a typical box's real chase-card excitement happens, since these show up often enough to be realistically pullable but still carry a meaningful rarity premium.
Leader cards, at just 6 total, also sit in this general excitement band, since Leaders anchor entire decks and tend to hold steady demand independent of whatever the current competitive metagame favors.
OP-18's 2 Secret Rare slots are both filled by the Yoshitaka Amano crossover cards, meaning the entire top-rarity chase in this set is concentrated on Loki and Saint Shamrock rather than split across multiple characters.
That concentration is unusual compared to some past sets and is a large part of why this specific rarity tier is generating outsized attention relative to its two-card size.
The remaining slots include 6 Special Card, 1 Treasure Rare, and 1 DON!! card, each representing a distinct format Bandai uses for premium or gameplay-specific inserts rather than standard playable rarities.
These tend to draw a different kind of collector interest, more focused on completing a full rarity-tier set than on deck-building value.
With 288 total cards across a 24-pack box, most buyers can reasonably expect to see a good spread of Common through Super Rare cards, but the single-digit Secret Rare and Treasure Rare counts mean a specific hit is genuinely unlikely from any one box.
Anyone chasing a specific card from the top two rarity tiers should budget for the possibility that a single box does not deliver it, and plan a singles-market backup accordingly.
OP-17 and other recent sets have used broadly similar rarity structures, which makes OP-18's numbers a useful, familiar reference point rather than an unusual outlier for people who already collect this game.
The most notable shift for OP-18 specifically is not the raw numbers but the fact that its top rarity tier is entirely tied to the Amano crossover story rather than split across ordinary character reveals, a genuinely uncommon design choice worth noting on its own.
A rarity breakdown is most useful when you use it to set realistic expectations rather than to calculate exact personal odds, since a single box is too small a sample size to reliably predict any one outcome.
Treat the published numbers as a guide for budgeting singles purchases and box quantities, not as a promise about what any specific box you buy will contain.
127, spread across nine rarity tiers.
Two, both featuring Yoshitaka Amano artwork.
Six Leader cards total.
The overall structure is similar to recent sets, though the Secret Rare count is on the lower end.
Understanding the real rarity math helps set realistic expectations before you decide how many boxes to open chasing OP-18's top-tier cards.
EVORETRO's Acrylic Case Display keeps any sealed boxes you do buy protected and presentable while you work through your opening strategy. Check out the EVORETRO Acrylic Case Display for Bandai One Piece OPP 4-6 TCG Booster Box.
!
