borghe said:The key will be to keep the rules balanced. Star Wars by Decipher for example only allowed you to have one of any unique in your deck at a time. So you couldn't throw 5 Darth Vaders in there.
I'm guessing some inbalances will be found eventually as this is, after all, the first game in the franchise. New frontiers and all that.
With that said, obviously stronger cards need more mana to be used so you will have to keep up a good balance of lighter cards, spell cards and strong cards to compete.