What this does: EB05 has no fixed case map — hits land 2 to 5 per box at random. But a case still converges on a budget, so every box someone opens changes what the sealed ones are worth. Set your case count, click each box that has been opened, tick what it held, and the odds for every remaining sealed box recalculate live. The budget comes from a measured 12-box case: 71 base SRs, ~40 premium hits, 3–5 SPs. Full method on the EB05 pull rates page.
EB05 Case Calculator
Set your case count, click each opened box, and tick what it held. Everything recalculates live. The Odds / sealed box column is the chance a box you have not opened yet holds at least one of that hit, given what is already gone from the case — compare it against the grey base figure, which is the flat rate for a fresh untouched box.
Click a box to open it, then tick what it held. Boxes you leave untouched are still sealed — the odds below are for those.
Select a box above to record its hits.
| Hit type | Odds / sealed box | Expected total | Found | Left in case | Avg / box |
|---|---|---|---|---|---|
| Alternate-Art SRReliable | 65%base 65% | 12 | 0 | 12 | 1 |
| Secret Rare — Nami EB05-061Reliable | 54%base 54% | 9 | 0 | 9 | 0.8 |
| Alternate-Art RareReliable | 46%base 46% | 7 | 0 | 7 | 0.6 |
| Alt-Art LeaderReliable | 35%base 35% | 5 | 0 | 5 | 0.4 |
| Gold DON!!Reliable | 16%base 16% | 2 | 0 | 2 | 0.2 |
| SP (Special Art)Lottery | 23%base 23% | 3 | 0 | 3 | 0.3 |
| Manga Rare — ShirahoshiLottery | 0%base 0% | 0 | 0 | 0 | 0 |
| Super Leader Alt Art — Nico RobinLottery | 0%base 0% | 0 | 0 | 0 | 0 |
| SP God PackLottery | 0%base 0% | 0 | 0 | 0 | 0 |
Estimates only. EB05 has no fixed hit map — premium hits landed 2–5 per box at random across a measured 12-box case, so a case yields these counts on average with heavy variance. Odds treat the per-case totals as a soft pool spread across the sealed boxes; a real case can over- or under-shoot. The Manga Rare, Super Leader Robin and SP god pack read 0% because they went unobserved in 370 English packs — we publish no rate rather than invent one. Not affiliated with Bandai.
The EB05 Case Budget
These are the same measured aggregates behind our EB05 pull rates page, expressed as a per-case budget. The Reliable tier shows up in essentially every case; the Lottery tier is a genuine chase that can skip a case entirely.
| Hit Type | Avg / Case | Tier | Notes |
|---|---|---|---|
| Alternate-Art SR | 12 per case | Reliable | The workhorse premium tier — about one per box. Nami was the most frequent at 3 copies, then Sugar and Alvida at 2 each, with one apiece of the rest. Notably, twelve boxes produced no alt-art Nico Robin SR at all. |
| Secret Rare — Nami EB05-061 | 9 per case | Reliable | Despite the name, the most over-supplied premium in the set: 9 per case (8 base art + 1 alternate art), so most boxes hold one. Expect the price to reflect that supply. |
| Alternate-Art Rare | 7 per case | Reliable | Parallels of plain Rares — Black Maria ×3, Boa ×2, Perona (OP14-033) ×2. The Perona pair may actually belong to the SP tier; pre-release catalogues label that card SP while the opener sorted it here. |
| Alt-Art Leader | 5 per case | Reliable | Shirahoshi, Rebecca, Jewelry Bonney and two Nico Robins — roughly one per 2.4 boxes. Carries no star marking, so it is easy to mistake for a standard leader. |
| Gold DON!! | 2 per case | Reliable | Two per case in at least two different designs, one of them a cat-art version with Japanese text. Counted as a hit and explicitly not guaranteed in any given box. |
| SP (Special Art) | 3 per case | Lottery | The tier that carries the set — and the one real uncertainty. 3 confirmed in the case (Nami and Nico Robin Heroines, plus a Gerd OP17-081), possibly 5 if the two Perona copies are SPs. Set against ~8 SPs in the pool, a named SP needs 25–36 sealed boxes. |
| Manga Rare — Shirahoshi | not observed | Lottery | Zero in 370 packs — rarer than about 1 in 124 packs at 95% confidence. We publish no rate rather than guess one, so this reads 0%: a card to buy, not to chase. One case pull was called a Manga Shirahoshi in the moment and contradicted by the same opener at the end. |
| Super Leader Alt Art — Nico Robin | not observed | Lottery | The set ceiling and the second card ever at this rarity, after OP17 Luffy. Zero in 370 packs. The only comparable, the OP17 Luffy Super Alternate Art, trades around $1,270 in English. |
| SP God Pack | not observed | Lottery | A pack in which every card arrives as an SP. Confirmed first-hand in the JAPANESE print; none appeared in 370 English packs, which puts it rarer than ~1 in 370 there. English almost certainly shares the mechanic, but that is an inference. Pack feel and seal are not a tell. |
The tracked tiers sum to 38 against the case opener’s own physical count of 40 hits — the ±2 we publish on the pull-rate page. Base Super Rares are deliberately not tracked here: at ~6 per box from a flat nine-card pool (71 per case) they are a floor, not a lottery, so they would only add noise to the odds.
EB05 Has No Fixed Case Map
If you came looking for a box-by-box chart, there is not one, and any “EB05 case map” you find claiming otherwise is either from an older set or invented. The opener of our full case said plainly that EB05 hits were not mapped and scattered all over the case. The evidence in the case backs him up:
- Premium hits ranged 2 to 5 per box with no detectable pattern — a 2-hit box sat in the same case as two 5-hit boxes
- Base SRs swung from 3 to 9 between adjacent boxes, against a 5.9 average
- The one positional observation — both 5-hit boxes were the top-right and bottom-right of the case — is a single case and nine counter-examples away from being a pattern. The opener flagged it as coincidence himself. Do not pay a premium for a corner box.
This is the same thing that happened to OP16 and OP17, and the history of how Bandai broke case mapping — collation, the dead-pack tell, and what each set removed — is covered in full on our One Piece case mapping explainer. What survives on EB05 is case-budget mapping, which is arithmetic on a depleting pool rather than a chart.
How the Odds Are Calculated
The model is deliberately simple and honest. For each hit type it takes the per-case average (say 5 alt-art leaders), multiplies by your number of cases, and subtracts everything you have recorded to get the hits left in the case. Those remaining hits are spread across the boxes you have not opened, and the tool reports the chance a given sealed box holds at least one.
- Odds / sealed box — the conditional chance for a box you have not opened yet, after accounting for what is gone
- base (grey) — the flat rate for a fresh, untouched box. Compare the two to see how far the opened boxes have moved your odds
- Avg / box — expected number of that hit still sitting in each sealed box
- “Case average already met” — you have recorded more of that hit than the case budget predicts. The case over-shot; everything further is upside, and the model stops crediting it
Three rows will read 0% no matter what you do: the Manga Rare Shirahoshi, the Super Leader alt-art Nico Robin and the SP god pack. That is intentional. All three went unobserved across 370 English packs, and zero observations gives an upper bound (rarer than ~1 in 124 packs at 95% confidence) rather than a rate. Publishing a made-up number there would be the one thing that could make this calculator actively misleading — so they sit at zero and anything you pull against them is flagged as bonus territory.
On the god pack specifically: it is real. We have observed an all-SP god pack first-hand in the Japanese print. None appeared in our 370 English packs, so English is an inference from the shared card pool rather than something we have seen — and either way it is far too rare to model. Note also that a god pack means SPs arrive in two modes, so the real SP distribution has a fatter tail than the flat 3–5 per case this calculator uses.
How to Use This at a Shop
- Ask the two questions that matter: how many boxes are already out of this case, and what came out of them? Without that, every box on the shelf is just the base rate.
- Enter the opened boxes, including the duds. A box opened with zero hits still depletes the case — it shrinks the pool of boxes the remaining hits can hide in, which is what pushes the odds up.
- Watch the lottery tier hardest. The SP is the only tier that materially changes what a case is worth. Untouched, a box is a 1-in-4 shot at one; with nine boxes gone and no SP recorded, the last three carry the whole budget.
- Treat the reliable tier as texture, not a reason to buy. The Nami Secret Rare lands 9 per case — most boxes have one. It is not a chase, and at that supply it should not be priced like one.
- Remember what the number is. Rising odds mean a better bet, not a promise. A real case can under-shoot its averages entirely.
And the honest caveat that applies to the whole exercise: on EB05’s measured rates a box holds roughly $200–$320 of expected singles at EB03 comparison prices, most of it concentrated in an SP that three boxes out of four do not contain. Case mapping tells you which sealed box is the better bet. It does not make a bad bet good — see the full EV breakdown.
Frequently Asked Questions
Does EB05 have a case map?
Not a fixed one. The opener of a full 12-box EB05 case stated plainly that hits were not mapped and were scattered across the case, matching what Bandai has done since OP16 and OP17. Premium hits landed 2 to 5 per box with no detectable pattern and base Super Rares swung from 3 to 9 between adjacent boxes. What survives is the case-level average, which is what this calculator models: take the per-case budget, subtract everything already pulled, and spread the remainder across the boxes still sealed.
How many hits are in an EB05 case?
A measured 12-box case produced 71 base Super Rares plus about 40 premium hits — roughly 111 cards at SR or better across 288 packs. The premium hits broke down as about 12 alternate-art SRs, 9 Nami Secret Rares, 7 alternate-art Rares, 5 alt-art leaders, 2 Gold DON!! and 3 to 5 SPs. Per box that is around 6 base SRs and 2 to 5 premium hits.
What are the odds of an SP in an EB05 box?
About 1 in 4 boxes on the confirmed count of 3 SPs per case, or 1 in 2.4 if the two contested Perona copies are also SPs. That means somewhere between 58% and 75% of EB05 boxes contain no SP at all. The calculator sharpens this as a case empties: if nine boxes are open and no SP has appeared, the remaining three carry the whole case budget between them.
Why do the Manga Rare and Super Leader Robin show 0% in the calculator?
Because they went 0-for-370 packs in our sample, including the full case. Zero observations puts each rarer than roughly 1 in 124 packs at 95% confidence, but that is an upper bound, not a rate — so rather than invent a number we show 0% and flag anything you record against those rows as bonus territory. The honest read is that both are buy-only cards: not pulls you can plan a case purchase around.
Can you use case mapping to pick a good EB05 box at a shop?
Only as probability, never as a guarantee. The useful question at a counter is how many boxes are already out of that case, and what came out of them. If a case has given up most of its boxes without surrendering its SP or its alt-art leaders, the remaining sealed boxes genuinely carry better odds — that is what the Odds / sealed box column shows against the flat base rate. But with no fixed map a real case can over- or under-shoot its averages, and anyone selling “mapped” EB05 boxes as a sure thing is selling a model that no longer exists.
Disclaimer: Estimates only, built on 370 packs including one full 12-box case physically counted on stream. EB05 has no fixed hit map, so a real case can over- or under-shoot these averages. The Manga Rare, Super Leader Robin and SP god pack are shown at zero because they were unobserved in our English sample — the god pack has been confirmed first-hand in the Japanese print, and its presence in English is an inference. Bandai does not publish official hit rates for the One Piece Card Game. This is not financial advice.