The brawling rules are:
3 ABILITY CARDS 1 red, 1 green and 1 blue
3 GATE CARDS 1 gold, 1 silver and 1 bronze
3 Bakugan per person
2 Traps per person
EVERYONE starts in E Division
The divisions are levels of Bakugan you can have
Until you beat so many people you will stay on E division.
I will post if you go up a division at the end of a battle