Card Break. Alot. Take as many 8-9 maybe 7 rank attack cards as you can as well as a healthy stock of 0s. As for enemy cards take Maleficent Dragon, Oogie Boogie and Vexen, maybe even Jafar-Genie. Take a couple of elixirs/megalixirs too as well as item cards that heal only your attack cards. You should spend most of the battle attacking just AFTER Marluxia uses his cards and get one hit in at the time as you card break him. This is why as soon as the battle begins you want to use Maleficent Enemy Card to power up you single hits. That and card break his combos with the 0 cards you should set at the end of your deck so that with a couple of toggles of the L shoulder button you can get to them. That's how most of the battle should go. If your opponent begins to stop using Stock Combos then you know you're on the right track. Oh and PLEASE pay attention to the two Megalixirs he might use. Only reload your deck when he does.