English Edition 'Delta Reign' Releasing November 6… Build & Battle Early Access from the 24th

The next expansion for the Pokémon Trading Card Game English edition, 'Mega Evolution—Delta Reign', will be released on November 6. The official Pokémon English website posted prerelease information on September 28, revealing the schedule to try out the new cards ahead of the official release.

Build & Battle Box Early Sales Starting October 24

According to the announcement, select Play! Pokémon stores will sell 'Delta Reign Build & Battle Boxes' starting October 24. Players will participate in in-store prerelease tournaments using these boxes. Each box includes 4 Delta Reign booster packs, a 40-card deck built with key cards from current and past expansions, and 1 of 4 foil promo cards. The four promo cards are Masquerain, Magmortar, Enamorus, and Kommo-o.

The prerelease format is played with a 40-card deck and 4 prize cards, which is smaller in scale than standard matches featuring a 60-card deck and 6 prize cards. The official website directed participants to find participating stores using the Event Locator, and stated that those who cannot attend a prerelease can still purchase Build & Battle boxes starting on the official release date.

Over 135 Cards, Headlined by Mega Rayquaza ex

Delta Reign was first announced on August 20. According to the official announcement, the set contains over 135 cards, including more than 20 Trainer cards and over 35 special illustration cards. The headline card is Mega Rayquaza ex, alongside Mega Golurk, Mega Malamar, and Mega Golisopod. The official website only stated that "additional information will be revealed soon," and as of October 13, product compositions and prices for booster boxes are not yet listed on the official page.

Korean Edition Released Earlier as 'Storm Emeralda'

Japanese card retailer Samurai Sword Tokyo explained in a guide posted on September 8 that Delta Reign is the English version of the Japanese expansion 'Storm Emeralda (M6)'. However, this correspondence is a retailer's explanation and is not explicitly stated in official Pokémon announcements. The Japanese edition 'Storm Emeralda' was released on July 31 at 200 yen (tax included) per pack.

The Korean edition MEGA expansion 'Storm Emeralda' was released on August 21. According to the official Pokémon Card Korea website, the price is 1,500 won per pack and 45,000 won per box. If it shares the same card pool as retailer descriptions suggest, the Korean edition was released about two and a half months earlier than the English version. Confirmation will be needed once official product information for the English edition's box composition is released, to see if it matches the Japanese and Korean editions.

---

Sources

• Pokémon Official (English) · Play at a Pokémon TCG: Mega Evolution—Delta Reign Prerelease Event (2026-09-28)
• Pokémon Official (English) · The Pokémon TCG: Mega Evolution—Delta Reign Expansion Arrives November 6, 2026 (2026-08-20)
• Samurai Sword Tokyo · Delta Reign vs Storm Emeralda Guide (2026-09-08)
• Pokémon Card Korea Official · MEGA expansion 「Storm Emeralda」 (Released 2026-08-21)
• Pokémon Trading Card Game Official (Japanese) · Product Information (Expansion) (Checked 2026-10-13)