Is a large part of the gameplay in Birth Order.
During a stage some of the enemies will drop cards for you to pick up. These cards can be "played" during the map mode.
- Tip, gives you hints to the game play and guides to what to do.
- Experience Boost, same as collecting a certain number of stars
- Shield, you get to take 3 or 5 hits depending on what shiled you got
- Smart Bomb, gets activated when you get hit, once
- Berzerk, you get hyper active and more poweful
- Map, reveals a bit of the map so you can plan your journey
- Key, opens one of the locks around the antagonist.
There're los of more cards to discover. There's a special type of card that is crucial for the (true) completion of the game as well...