The Deck Kit includes two Half Decks that focus on Pokémon belonging to Team Magma and several supporting Trainer cards. The two Half Decks can be played independently or combined to form a Full Deck, allowing varying levels of play. The Half Decks also share a collective numbering system to reflect this.
The Magma Deck Kit also includes a rulebook, damage counters, status counters, a custom coin, and playmat.
In the English release, the majority of these cards, along with a majority of cards from the Aqua Deck Kit were combined with the main expansion to form the English set. The Non Holofoil Aggron is a Japanese exclusive, as the English version only has a Holofoil version.