Strength Expansion Pack: Battle Region is a subset containing at least 67 cards and is set for release in Japan on February 25, 2022. Each booster pack contains five cards. The subset features several Pokémon that made their debut in the core series title Pokémon Legends: Arceus, such as Wyrdeer and Kleavor, in addition to supporting characters from the game. The subset also includes more Character Rare Full Art cards featuring Pokémon Trainers, following their reintroduction in the VMAX Climax subset, as well as a new gameplay mechanic—Sparkling Pokémon. Sparkling Pokémon are comparable to Shining Pokémon from the Neo Series and Pokémon ☆ from the EX Series, in that they depict the Shiny form of a Pokémon and have a Rule Box stipulating only one copy can be included in a deck. Sparkling Pokémon have a Pixel Crosshatch Holofoil pattern and have a new 'K' rarity.