Pokémon Soul Generations - Official Battle Disk Rulebook
-Rule 1: All decks must have AT LEAST 40 cards to be a legal deck.
-Rule 2: Trainers can have up to 7 cards in their hand. if their hand has eight or more cards, they must discard until their hand has 7 cards in it.
-Rule 3: Only ONE Field card can be played at a time. If either Trainer plays a Field card while another one is active, the current Field card is sent to the discard pile and the new one is played.
-Rule 4: Any battle involving the Battle Disk, where the opposing Trainer DOESN'T have a Battle Disk, or the opponent is a wild Pokémon, will result in all Pokémon on the opposing side gaining an aura that boost their stats.
-Rule 5: If you somehow run out of cards in your deck, you can take your discard pile and insert it into your deck slot, where it's then reshuffled.
-Rule 6: If you decide to deactivate your normal battle cards before their three turn limit is up, all of your Pokémon have their stats raised for JUST the first turn they're sent out in battle.
-Rule 7: In accordance with Rule 7, if you decide to not change Pokémon during battle with this situation arises, then your Pokémon that remains on the field has their stats raised for the first turn against a new opponent.
-Rule 8: All Battle Decks can have just one copy of any Field, Type Sword, and Type Shield cards, while everything else can have up to three copies.
Pokémon Soul Generations - Official Battle Disk Instruction Manual
-Attach the Battle Disk to your non-dominant wrist
-Place your deck in the deck slot
-When a card is removed from the field, or discarded from your hand, send it to the discard pile, which is located 90 degrees to the right on the deck slot
-The Battle Disk has five main slots, and a special sixth slot for field cards
-The Battle Disk will always be in standby mode until the Trainer places their deck into the deck slot