After a card battle, cards the opponent used that you don't have yet can be duplicated.
| Opponent |
|---|
 Card player - Shinjuku: Kabukicho, Theater Square |
 Kokuwamon - Central Town: Downtown |
 Tsunomon - Central Town: Shanty |
 Pukumon - Abyss Sanctuary: Throne Room |
 Sunflowmon - Gear Forest: Shaded Woods |
 Deputymon - Paradise Colosseum |
 DemiDevimon - Dark Castle |
Cards linked to this card's Extra Card Summon in the game data. Extra Card Summon generates a card during a card battle from a combination of cards in your hand.
Vaccine
Ginryumon
Shops
Enemy drops
Extra Card Summon
Ryudamon
Kotemon
Dracomon
Hisyaryumon