Verdict: Pokémon Delta Reign prereleases ran October 24 to November 1, and the full set comes out Friday, November 6, 2026. If you missed your store’s event, the Build & Battle Box is still the cheapest way to play with the set: 4 Delta Reign packs, a 40-card deck and one of 4 foil promos. Stores usually keep selling them at the $21.99 retail price around release, so check your local shop before paying about $53 online.
Updated November 2, 2026: prereleases are over. For release-day odds, see our Delta Reign pull rates, and for prices and products, our Delta Reign release guide.
Updated October 24, 2026 · Event and product details from Pokémon’s official prerelease announcement (September 28, 2026) · Prices checked October 24
Who this is for: players going to their first Delta Reign prerelease, and collectors who want the early packs and promos before the November 6 release.
Table of Contents
When are the Pokémon Delta Reign prereleases?
October 24 to November 1, 2026. Select Play! Pokémon stores start selling the Delta Reign Build & Battle Box on October 24, so you can play with the set two weeks before it comes out on November 6.
Each store sets its own schedule and entry fee, so use Pokémon’s Event Locator to find events near you and call ahead, since spots can be limited.
What’s in the Delta Reign Build & Battle Box?
The Delta Reign Build & Battle Box and its four promos. Image: The Pokémon Company.
- 4 Mega Evolution—Delta Reign booster packs
- A 40-card, ready-to-play deck with key cards from current and older sets
- 1 of 4 foil promo cards: Masquerain, Magmortar, Enamorus or Kommo-o, each with a deck built around it
The Build & Battle Box is $21.99 at retail. It’s the only official way to open Delta Reign packs before November 6, and Pokémon says the boxes will also be sold after launch if you can’t make an event.
How does the Prerelease format work?
Kommo-o, one of the four prerelease promos. Card: The Pokémon Company.
40-card decks and 4 Prize cards, instead of the usual 60 cards and 6 Prizes. Games are quicker, and you build your deck from the 40-card deck plus whatever you open in your 4 packs.
It’s a good first event. The card pool is small, so nobody shows up with a tuned tournament deck.
Which Delta Reign prerelease promo deck is best?
You don’t get to choose, since each box has one promo at random, but here’s how each deck plays, based on Pokémon’s own breakdown:
Building for Standard after the prerelease? Here are the 10 Delta Reign cards that matter for play.
- Masquerain: a Bug Out deck. Masquerain’s Bug Out costs just 1 Grass Energy and hits harder for each other Bug Out Pokémon you find, and Sacred Ash puts your bugs back in the deck to keep it going.
- Magmortar: a buddy deck. Its Buddy Boost Ability attaches Fire and Lightning Energy to Magmortar or Electivire, which powers Electivire’s Voltaic Hammer, at 60 damage for each Energy discarded.
- Enamorus: the forces of nature deck. With Enamorus, Thundurus, Landorus and Tornadus all in play, Incarnate Solidarity ignores Colorless Energy in their attack costs.
- Kommo-o: the most self-contained deck. Beat Scales attaches Energy to your Dragon Pokémon, and Kommo-o’s Hammer In does 170 damage.
Should you buy a Build & Battle Box online?
Not right now. TCGplayer’s market price is about $53, more than twice the $21.99 retail price. Stores sell them at their prerelease events, and they’ll be on shelves after November 6.
The same goes for the rest of the set. The Elite Trainer Box is preordering at about $106 against a $49.99 retail price, as we break down in our Delta Reign Elite Trainer Box guide.
What should you bring to a Delta Reign prerelease?
- Sleeves for 40 cards, so your new pulls are protected while you play.
- Damage counters or dice, if your store doesn’t hand them out.
- A deck box or toploaders to carry home anything good you open.
Pulled something big? Check it against our Delta Reign chase cards guide, which has the Japanese prices for the same cards.
Delta Reign on TCGplayer
Read next: Pokémon Delta Reign: Release Date, Price, Chase Cards and What to Preorder · Delta Reign Elite Trainer Box: Contents, Price and Is It Worth It? · Best Pokémon Gifts for 2026 at Every Budget (That Aren’t Overpriced) · How to Protect Trading Cards · Delta Reign Pull Rates
Which cards are worth pulling? See our Delta Reign chase cards, ranked by Japanese prices.
Next step: find a store with the Event Locator and book a seat before October 24. For more Pokémon, see our Delta Reign ETB guide, the best-value Pokémon sets ranked and our best Pokémon gifts of 2026.
Sources: prerelease dates, Build & Battle Box contents, format rules and promo decks from Pokémon’s official announcement, “Play at a Pokémon TCG: Mega Evolution—Delta Reign Prerelease Event” (September 28, 2026). Retail price from PokeGuardian’s Delta Reign product reveal. Preorder prices from TCGplayer, checked October 24, 2026. Images: The Pokémon Company.
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