Board Thread:Game Discussion/@comment-67.187.25.76-20130508083413/@comment-8118083-20130508084109

It is possible to win Rare cards in the daily free Space Bridge. My Elite Megatron alt mode came from one of these. Or you can spend money.

Your best bet however will be to take part in the events and trade your reward medals - upon starting the event you will get 10 gold and 10 silver Episode medals. These should help you get started.