Chaos Rising Build & Battle Box

Paying players at the Prereleases for the fourth Mega Evolution Series expansion, on the weekends of May 9-10 and 16-17, 2026, were each given a box to use during the event, and shops could sell extra ones there.

• 4 Chaos Rising booster packs
• 1 ready-to-play 40-card deck built around one of four MEP Black Star Promos: Delphox, Ampharos, Crobat or Goodra
• 1 deck-building tip sheet and 1 Pokémon TCG Live code card