M6 “Storm Emeralda” released in Japan on July 31, 2026, and it’s the kind of box that gets asked about constantly: four Mega ex headliners in one set, a brand-new two-part Stadium mechanic, and a secret-rare pool that hasn’t even fully surfaced online yet. If you’re trying to work out what you actually get in a box, which cards are worth chasing, and how our own two Storm Emeralda listings differ, this guide covers all three.
We’ll go through the official pack and box structure, the named chase cards by rarity tier, a direct comparison of our Regular Box and Damaged Box listings (the pricing here runs the opposite way from what you might expect), and how this Japanese set lines up against its English-language counterpart. Everything below traces back to our own set-info coverage and today’s listing prices — no third-party pull-rate math and no guesswork on what isn’t confirmed yet.
M6 Storm Emeralda is a 113-card set (76 numbered base cards plus 37 secret rares) released July 31, 2026, built around four Mega ex headliners — Mega Golisopod ex, Mega Golurk ex, Mega Malamar ex and Mega Rayquaza ex. The M6 Storm Emeralda Booster Box is currently listed at ¥11,040 (~$69); the Damaged Box listing is currently listed at ¥12,960 (~$82) — unusually, that’s more than the regular box, not less, so check both product pages before choosing.
Prices below are our current listed prices as of September 2026, converted at ¥159/USD.
What’s in a Storm Emeralda Booster Box
Storm Emeralda is the official EN name for this set; the Japanese name is “ポケモンカードゲーム MEGA拡張パック「ストームエメラルダ」”, and it carries the set code M6. It’s the sixth entry in the MEGA expansion line.
| Item | Value |
|---|---|
| Set code | M6 |
| Release date (JP) | July 31, 2026 (Friday) |
| Packs per box | 30 |
| Cards per pack | 5 |
| Pack price (tax incl.) | ¥200 |
The ¥200 per-pack figure comes from our own set coverage rather than a standalone price confirmed directly on the official Pokémon Card site today — treat it as store-sourced. What we can confirm from the same coverage is the pack and box structure above, plus the full 113-card total: a 76-card numbered base list (62 Pokémon, 14 Trainers) plus a 37-card secret-rare tier — 12 Art Rare (AR), 18 Super Rare (SR), 6 Special Art Rare (SAR) and 1 Mega Ultra Rare (MUR).
Two things set this release apart from a standard expansion pack. First, it introduces a new two-part “Legendary Summit” Stadium mechanic — a left-and-right paired Stadium card printed as a set. We cover exactly how that works in a dedicated two-part Stadium cards guide. Second, Storm Emeralda doesn’t include any Basic Energy cards — a detail specific to this Japan-only release.
Four Mega ex headline the set’s base printings: Mega Golisopod ex (009/076), Mega Golurk ex (033/076), Mega Malamar ex (048/076) and Mega Rayquaza ex (058/076). Beyond those four, the base list also carries Heat Rotom ex, Wishiwashi ex, Raikou ex and Talonflame ex.
These four images show the base-set printing of each Mega ex — the numbered card you’ll pull most often. Several of these also have higher secret-rare printings in the 095–113 range, covered in the next section.
For the full card-by-card checklist across all 113 entries, see our companion Storm Emeralda M6 card list article — this buying guide focuses on the box itself and the cards worth planning a purchase around, while that article is the full reference checklist.
Chase Cards in Storm Emeralda
We’re not publishing pull-rate estimates in this guide — Pokémon Card doesn’t release official pull odds, and any percentage you see quoted elsewhere is a community estimate, not a confirmed rate. What we can lay out with confidence is which named cards sit in the secret-rare tier, and at what rarity:
| Card | Rarity | Number |
|---|---|---|
| Mega Rayquaza ex | MUR | 113/076 |
| Mega Rayquaza ex | SAR | 110/076 |
| Raikou ex | SAR | 108/076 |
| Zinnia’s Trust | SAR | 112/076 |
| Mega Golisopod ex | SAR | 107/076 |
| Mega Golurk ex | SAR | 109/076 |
| Mega Rayquaza ex | SR | 095/076 |
| Kyogre | AR | 080/076 |
| Groudon | AR | 084/076 |
Mega Rayquaza ex has printings across three different secret-rare tiers — SR, SAR and the set’s single MUR — which is why it anchors the top of the set’s rarity ladder. The secret pool holds six SAR slots in total; five are named in the table above (Rayquaza, Raikou, Zinnia’s Trust, Golisopod and Golurk), with the sixth detailed in our Storm Emeralda pull rates and best cards article — that companion piece is where we lay out community-sourced pull-rate estimates card by card; this guide keeps to box structure and buying decisions.
Because Storm Emeralda is still a recent release, secret-rare scans above card 076 aren’t yet hosted on the third-party card database we normally pull images from — only the base-set printings shown in the section above are available today. The Mega Rayquaza, Mega Golisopod and Mega Golurk photos further up this page show each card’s base printing, not the SAR/MUR chase version listed in the table here.
Zinnia’s Trust is the set’s one Trainer-card SAR in the named chase pool — if you want more on Zinnia as a character across her Japanese printings, see our Zinnia Pokémon cards guide.
We don’t currently have any graded PSA 10 Storm Emeralda singles listed — the set is only a few weeks old, so no graded examples have entered our catalog yet. If you’re after a specific single rather than sealed product, requests go through the Quick Order page, and our sealed box vs singles guide walks through that decision in more detail.
Regular Box vs Damaged Box on Our Site
We list Storm Emeralda in two separate listings, and the pricing between them runs opposite to what you’d normally expect:
| Listing | Price |
|---|---|
| M6 Storm Emeralda Booster Box (Japanese) | currently listed at ¥11,040 (~$69) |
| M6 Storm Emeralda Booster Box (Japanese) — Damaged Box | currently listed at ¥12,960 (~$82) |
A Damaged Box listing on our site is usually the cheaper of the two options. That’s not the case here: right now the Damaged Box listing runs ¥1,920 above the regular box, not below it. If you’re choosing between the two, don’t assume the Damaged listing is the discount option — open both product pages and compare the live prices before deciding, since either can move independently of the other.
Where to Buy a Storm Emeralda Booster Box from Tokyo
We ship sealed Japanese product worldwide from Tokyo with tracked delivery. For Storm Emeralda specifically, the two listings covered above are the direct route in:
- Regular sealed box — currently listed at ¥11,040 (~$69)
- Damaged Box listing — currently listed at ¥12,960 (~$82)
For other current-era Pokémon boxes, browse our full Pokémon booster box collection. Anything not currently listed — a specific Storm Emeralda single, a restock request, or a mixed order across sets — can go through the Quick Order page.
A few more places to go deeper on this set:
- Storm Emeralda pull rates & best cards — community-sourced pull-rate estimates by card, not covered in this buying guide.
- Storm Emeralda full card list — every numbered entry across the set, for reference rather than buying decisions.
- Delta Reign vs Storm Emeralda — the English/Japanese bridge for this set.
- Abyss Eye (M5) vs Storm Emeralda (M6) — a box-to-box comparison with the previous MEGA-line release.
- Sealed box vs singles — whether to buy sealed product or hunt individual Storm Emeralda cards.
- Two-part Stadium cards — how the set’s new Legendary Summit mechanic works.
- Thundurus cards guide — a related Pokémon species guide that touches on M6.
Frequently Asked Questions
What is Storm Emeralda (M6) and when did it release?
Storm Emeralda is the EN name for M6, the sixth set in the Japanese MEGA expansion line — officially “MEGA Expansion Pack ‘Storm Emeralda’” in English and “MEGA拡張パック「ストームエメラルダ」” in Japanese. It released in Japan on July 31, 2026.
What’s inside a Storm Emeralda booster box?
Each box has 30 packs of 5 cards, drawn from a 113-card set: a 76-card numbered base list (62 Pokémon, 14 Trainers) plus 37 secret rares — 12 Art Rare, 18 Super Rare, 6 Special Art Rare and 1 Mega Ultra Rare. The set does not include Basic Energy cards.
What are the chase cards in Storm Emeralda?
Mega Rayquaza ex leads the set with printings across SR (095/076), SAR (110/076) and the set’s single MUR (113/076). Other named secret rares include Raikou ex SAR, Zinnia’s Trust SAR, Mega Golisopod ex SAR, Mega Golurk ex SAR, and Kyogre and Groudon at AR. We don’t publish pull-rate figures in this guide since Pokémon Card doesn’t release official odds.
Is the Damaged Box cheaper than the regular Storm Emeralda box?
Not currently. Our Damaged Box listing is priced at ¥12,960 (~$82), which is ¥1,920 above the regular sealed box at ¥11,040 (~$69). Check both product pages directly, since either listing’s price can move independently.
When does the English version of Storm Emeralda release?
The English-language counterpart, Mega Evolution — Delta Reign (ME06), is scheduled for international release on November 6, 2026, with Build & Battle Kits following on November 20. Its card list had not been announced at the time of our set coverage.
Can I buy graded PSA 10 Storm Emeralda singles?
Not yet through us — as a recent release, no graded Storm Emeralda singles are in our catalog at the moment. Requests for specific singles can be flagged through the Quick Order page.
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