| Cosmic Eclipse Build & Battle Box
The Cosmic Eclipse Build & Battle Box is a special product given to participants at the start of Prerelease Tournaments for the Cosmic Eclipse expansion. Prerelease Tournaments for the Cosmic Eclipse expansion were held on the two weekends prior to the release of the expansion, on October 19-20, and 26-27, 2019. Each box contains a random set of predetermined cards designed to enhance the experience of the Limited format tournament that follows.
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 Cosmic Eclipse expansion are Buzzwole, Entei, Phione, and Blacephalon, with each containing a group of Pokémon cards that are focused around their following types respectively: Grass-type, Fire-type, Water-type, and Psychic-type.
The Cosmic Eclipse Build & Battle Boxes provided exclusive Non Holofoil versions of cards which were only released as Holofoil in Cosmic Eclipse booster packs: Sawsbuck, Dusknoir and Rosa.