Me too, I got two of legendary ones, it was easy to exchange with the starters ones.
But I don't play this game since finishing it, Nintendo made a mistake while only making profile users fighting, not real!
Instead of that, I was on Yu-gi-oh Spirit Caller international duel mode, and now on 2008 World Championship.
It is hard, and bad loosers often disconnect before the end of the fight, so you cannot gain points and rank (but these bastards are loosing points! But if they have 0 pts, they cannot go below
)
Hard to play, hard to compose a good deck, I made a very defensive one, so they often disconnect as it is hard to hurt me without themselves loosing points... I'm a kind of panzer in this game...)