The Phantasmal Flames Build & Battle Box was released as a prelude to the Phantasmal Flames expansion and offered people the opportunity to experience the cards before their general release on November 14, 2025. Tournaments were typically held on the weekends of November 1-2 and November 8-9, 2025. Boxes could also be purchased from stores in the Prerelease Program from September 13, 2025.
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Each box included a ready-to-play 40-card deck plus four Phantasmal Flames booster packs to potentially integrate useful cards into it. Each Phantasmal Flames Build & Battle Box deck includes a promotional card, and an assortment of Pokémon, Trainer cards, and Energy cards themed around the promotional card. The possible promotional cards include Ceruledge, Zacian, Flygon, and Toxtricity. Phantasmal Flames Build & Battle Boxes were categorized as Play Level 2.
The boxes could provide exclusive Non Holofoil versions of cards only available as Holofoil in Phantasmal Flames booster packs: Moltres, Zacian, Flygon, and Toxtricity.
Box structure
Each box included one of the following four different decks.
