Kingdom Hearts: Chain of Memories

The best thing you can do is keep fighting heartless and hope you get a blue 1 card. And you might even level up fighting because it might take a while.

Ugh, that door was a total pain. There really isn't any trick to it, but I'd recommend opening a Moment's Reprieve room somewhere in the middle and Teeming Darkness rooms on either side and going through all the Heartless.

You might be better off going to a lower floor of the castle; iirc, you're more likely to get lower numbered-map cards on lower floors, and higher-numbered ones on higher floors.

I think this is a part of the game.. u cant seem 2 go through becuz d game chose the card u dont have..cuz u realy hav 2 level up in this game b4 fighting the final boss... but i could be wrong.. its just an opinion...