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Aaron's Step 2 Deck (Japanese: あらいモンステップ2デッキ) is a deck made by one of Dr. Mason's researchers, Aaron, in Pokémon Card GB2: Here Comes Team GR!. The main purpose of this deck is to tutor the player on how to deal with Special Conditions such as Poison or Paralysis. This deck predominately focuses on Pokémon, with its secondary and tertiary focus being on and Pokémon, and the strategy emphasizes on causing Special Conditions to hamper foes. As this is a practice match, neither player's deck is shuffled, making a fixed card order each time the dual is played.
Practice Deck #2
Just like Aaron's Step 1 Deck before this one, the player is not permitted to use their own deck against the Step 2 Deck; instead, the player is given a deck by Aaron to combat Aaron's Step 2 Deck. Like the first practice deck given by Aaron, this Deck also has no official name, so it will be referred to as Practice Deck #2 (Japanese: 練習デッキ＃ 2). and Pokémon are the two focuses of this deck.
After completing the match (win or lose), the deck cannot be kept.