Here's a list of cards you can use
G Power Boost Card: These are the Gate Cards that simply increases a bakugan's power level. You may increase or decrease power from a specific attribute ranging by 50 Gs-300 Gs
Character Card: Any bakugan you choose can be used as the character cards' power bonus. If you play a bakugan on this card and the same card opens with its name stated, that bakugan may double its G power level.
Quartet Battle: Both players shoot in another bakugan to the battle and combine g power levels.
Super Pyrus: Switch g power levels of both battling bakugan on this Gate Card.
Intercept: Shoot in another bakugan and combine power levels with your original bakugan.
Mind Ghost: Destroy all bakugan on this Gate Card.
Transform: Increase your bakugan's power level to the point of your strongest bakugan in your arsenal's power level.
Triple Battle: Shoot in another bakugan and combine power levels with your original bakugan.
Level Down: Decrease your opponent's bakugan's power level by 100 Gs.
Ring of Flames: Increase your Pyrus bakugan by 80 Gs.
Trade Off: If your opponent's bakugan has 400 Gs or higher in power, you automatically defeat it.
Positive Delta: If you are a Ventus, Darkus, or SubTerra bakugan, decrease an Aquos, Pyrus, or Haos bakugan by 200 Gs. If you are a Pyrus, Aquos, or Haos bakugan, decrease a Darkus, Ventus, or SubTerra bakugan by 200 Gs. If you are attacked by one of the bakugan in your combination triangle, YOUR bakugan is decreased by 200 Gs.
3rd Judgment: Shoot in another Darkus bakugan and combine g power levels.
Quick Sand Freeze: Trap your opponent's bakugan and shoot in another one of your own after the original one has been defeated.
Battlefielder: Return all of the lost Gate Cards back to the battlefield.
Scapegoat: Decide whether the battle on a certain Gate Card should continue or not, call "Continue" or "Stop".
Bio Hazard: Undo your opponent's previous move.
Final Judgment: Call a bakugan attribute. Drain all power from every bakugan on this Gate Card with the exception of the attribute you called out.
Reloaded: Increase your bakugan on this Gate Card by 100 Gs for every bakugan you have on the battlefield.
Energy Merge: Transfer 100 Gs from your opponent's bakugan to your own.
Additional Task: The last player who shot in their bakugan onto this Gate Card must return it back to their arsenal.
Cheering Battle: Shoot in another bakugan of the same attribute as your original bakugan who helped open the Gate Card.
Double Battle: Both players shoot in another bakugan to the battle and combine g power levels.
Reinforcement: Increase your bakugan's power level by 100 for every bakugan on the battlefield of the same attribute as your bakugan on this Gate Card.
Peacemaker: Return all bakugan on this Gate Card back to their owners.
Joker's Wild: If there is a Darkus attributed bakugan on this Gate Card, it wins automatically. If there are two Darkus bakugan on this Gate Card, continue the round without Gate Card effects.
Grand Spirit: Increase your bakugan's power level by 50 Gs for every Gate Card your opponent has played in this brawl.
Switch Back: Any Preyas bakugan on this Gate Card that has used "Attribute Change" is automatically reverted back to its original attribute.
Wall Lock: Neutralize your opponent's active Ability card.
Androstasis: Return all bakugan on this Gate Card back to their owners.