Storm Emeralda vs Delta Reign: Same Set, Two Releases
Storm Emeralda vs Delta Reign is not really a contest between two sets. It is the same Mega Rayquaza ex expansion printed twice: once in Japanese, on sale since 31 July 2026, and once in English, arriving on 6 November 2026. The question for a UK collector is simpler than the search suggests. Do you want these cards now, in Japanese, or in three months, in English? The answer depends on what you plan to do with them, and the two prints differ in more than the language on the front.
Is Storm Emeralda the same set as Delta Reign?
Yes. Storm Emeralda (M6) is the Japanese expansion that becomes Delta Reign (ME06) in English. Both are built around Mega Rayquaza ex, both add Mega Golisopod ex, Mega Golurk ex and Mega Malamar ex, and both introduce the paired Legendary Stadium cards: one artwork split across two Stadiums that sit on the table together and count as a single Stadium in play. The Japanese print released first, so the full card gallery has been public since July and the Japanese singles market has already priced every chase.
The English set is bigger. Storm Emeralda runs to 76 cards in the main set and 113 with secret rares. Delta Reign is confirmed at more than 135 cards, because English sets fold in cards from Japanese promos and side products alongside the main expansion. If a card exists in Storm Emeralda it will exist in Delta Reign. The reverse is not quite true.
Storm Emeralda vs Delta Reign: what actually differs
Beyond the language, the products themselves are different objects. A Japanese booster box is a 30-pack display of five-card packs. An English booster box is 36 packs of ten cards plus an energy. That changes the maths on every hit.
| Storm Emeralda (Japanese) | Delta Reign (English) | |
|---|---|---|
| Release | 31 July 2026 | 6 November 2026 |
| Set size | 76 main, 113 with secret rares | 135+ cards |
| Pack | 5 cards | 10 cards plus energy |
| Booster box | 30 packs | 36 packs |
| Sealed lineup | Booster box and packs | Booster box, Elite Trainer Box, Pokémon Center ETB, booster bundle, blisters |
| Card text | Japanese | English |
Japanese packs are short but dense. Every five-card pack carries one slot that is Rare or better, which is why a Japanese box feels like it delivers hits at a steady rhythm rather than in bursts. English packs run more cards per pack and more packs per box, with the chase-tier odds spread across the larger set. If you want to feel the difference before you spend anything, our pack opening simulator already runs the Storm Emeralda pack structure with live card values, and the pull rate calculator covers the English Mega Evolution sets for comparison.
The Japanese Storm Emeralda booster box: 30 packs of five cards, sold as a display.
The chase cards are already priced
Because Japan has had the set for a month, there is no guesswork about what matters. On PriceCharting the Mega Rayquaza ex #113 (the gold Mega Ultra Rare) trades around $1,060 ungraded, with the Mega Rayquaza ex #110 Special Art Rare near $470. After those two the curve drops hard: Raikou ex #108 sits around $65, the Mega Rayquaza ex #95 around $44, and the Zinnia's Trust special art near $31. That is one of the most top-heavy chase pools of the whole Mega Evolution era, and the English versions will inherit the same shape once Delta Reign lands.
Japanese chase cards also grade well. Print quality is consistent, centring is typically tighter than English product, and PSA 10 multiples on the two big Rayquazas are already roughly double the raw price. If the plan is to pull, grade and hold the top card, the Japanese print gives you a three-month head start on a card the English market has not yet seen. Our Delta Reign set guide covers the full chase list and the English product lineup in more depth.
Price and timing for UK collectors
Storm Emeralda booster boxes are reaching UK shelves at roughly £105 to £120 from the retailers that stock Japanese product, and that price has been drifting down since release as Japan reprints and restocks. Buying direct from Japan looks cheaper on the listing and rarely is once it lands: sealed cards carry 2% customs duty, 20% import VAT on the goods plus shipping, and a courier handling fee before the parcel is released. Run any Japanese listing through our import tax calculator before you decide, and read the UK customs guide if you have never imported before.
Delta Reign pricing is not set yet, but recent Mega Evolution English booster boxes have landed at £190 to £230 in the UK, and the Pokémon Center Elite Trainer Box is the product that historically sells out first on release week. That is the format the Japanese set simply does not have: there is no Storm Emeralda ETB, no Pokémon Center exclusive promo, no bundle. If the PC ETB is what you collect, the only route is the English release, and the UK preorder guide explains how allocation works when it opens.
The Delta Reign Pokémon Center Elite Trainer Box, the format Storm Emeralda never had.
What you can do with Japanese cards
Collect and grade them, freely. Play them in a UK event, no. Play! Pokémon rules only allow cards in the language of the region, so a Japanese Mega Rayquaza ex is a shelf piece here, not a deck piece. Japanese cards also sit in a separate market: they trade against other Japanese copies, not against the English print, so a Storm Emeralda Rayquaza does not become worth less when Delta Reign releases. The two markets move together but they do not merge.
One more practical point. Japanese set text, attack names and the paired Stadium instructions are all in Japanese. The cards are identical in function, but if you want to read what you pulled without a translation, wait for November.
Which one should you buy?
Buy Storm Emeralda now if you collect Rayquaza, you grade, or you simply want the set on your shelf before winter. The chase pool is known, the box price is the lowest it has been, and the Japanese print quality is a genuine advantage on the two cards that carry the value. Wait for Delta Reign if you play, you want the Pokémon Center Elite Trainer Box, or you want English text on more than 135 cards including the extras the Japanese set never printed.
Plenty of collectors will do both, and that is not indecision. It is the same set at two price points and two dates. We run Storm Emeralda and Delta Reign as separate collections for exactly that reason, alongside the rest of the Mega Evolution era and everything sealed in the vault. Neither is listed yet. Drop Alert subscribers hear first when either goes live, the same way they did for the 30th Celebration allocation currently shipping.
