Restrict lotting of Triple Triad cards in Alliance Raids if the player owns the card

[Jojoya]

i hate to say it's just thems the breaks. you'll have to keep running it and hope you roll high enough is all. they can't make them unique or anything like that.

Why can't they be made unique? I know during the Moogle events the TT cards on the moogle vendor are unique so you can't purchase cards you already possess.