Green Map Cards

[Sora Kun]

So I am having problems trying to obtain green map cards.
I'm currently before the second + third fight of Marluxia, and I'm back at Destiny Islands with a Key to Rewards Card so I can get a Megalixer.

However, my biggest issue right now is that every battle I seem to be getting into is giving me mostly the blue and the occasional red map card. No greens. And I need more greens so I can finish off the green requirement on that door.

Is there anyway I can get greens easier or any specific area that would help me complete this requirement?
Any suggestions about this would be helpful.
Thanks.

 

[Beastly]

try to get into a roulette room and win green map cards.

 

[khconcept]

^what beastly said well actually they are random pop ups so its really hard to find specifics i remember i got stuck trying to find 1 lousy card ill never use again -_-

 

[qster]

Roulette room.

 

[Sora Kun]

Alright I'll try it.
Thanks for the suggestion.

EDIT: Roulette Cards don't seem to be letting me obtain green cards.
I'll try going back towards the beginning and see if they're more common there or something.
They seem to be very rare as of right now.