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| Rebel Clash Build & Battle Box
The Rebel Clash Build & Battle Box is a special product given to participants at the start of Prerelease Tournaments for the Rebel Clash expansion. These tournaments were set to be held on the two weekends prior to the release of the expansion: April 18-19, and April 25-26, 2020, but due the COVID-19 pandemic all events were cancelled. Select retailers still received the boxes and were allowed to begin selling them April 18, 2020, with a wider retail release on May 1, 2020. Each box contains a random set of predetermined cards designed to enhance the experience of the Limited format events in which they were initially distributed.
Included in each Build & Battle Box is a 23-card Evolution pack that includes one of four specially stamped Prerelease cards for the expansion, as well as four booster packs. The Prerelease cards for the Rebel Clash expansion are Flapple, Luxray, Coalossal, and Garbodor, with each containing a group of Pokémon cards that are focused around the following types respectively: Grass-type, Lightning-type, Fighting-type, and Darkness-type.
The Build & Battle Box included exclusive Non Holofoil versions of Holofoil cards from the Rebel Clash expansion: Luxray and Grimmsnarl. The copies of Professor's Research were also Non Holo, similar to the copies in the Sword & Shield Build & Battle Box and Sword & Shield Theme Decks.
Each Build & Battle Box included two of the following four different groups of Pokémon cards, with one group always coinciding with the included Prerelease promo.
Each Build & Battle Box also included an additional random group of 4 (or 5 if you received the Flapple or Coalossal group) of the following Supporter cards, with no more than 2 copies of a particular Supporter.