You should be able to buy armor to heal all of your health once you get to max. Right now, you really don't have really many ways to heal at that point.
Colino should add a connection from the Arena to Udini City. When the gold shop comes out, it's going to be a pain to move back and forth through so many areas to spend your gold.
Okay, I did it! Thanks to everyone that helped. What did it for me is to pay attention to Slide 4, where it talks about the special settings for your symbol.
I've looked over the comments and I've tried everything, but my Ship still won't move.
Could someone that got it to work after it initially didn't explain what they fixed?
@Kamikazoo: Yeah, I'm doing all of the challenges. I only have 42 wins, and I've already gotten 6 cards from the game, though, so I thought it was a lot larger.
@Shiva:
"the drop rate is something like 30% (ranked) and 10% (unranked) if you barely have any cards. once you get 15-20 cards, the drop rate turns into 3% and 1%."
That's pretty small!