Board Thread:Questions and Answers/@comment-33011666-20170926185642/@comment-33728484-20170926190854

- Press your finger on the Friend's card, it will tell you its stats (including the potential system) and also its cost. Before or after selecting it, it doesn't matter. You can also change up your team after selecting your Friend by pressing the arrows symbol next to "deck", just in case the cost is too high, just know that the team cost that will be showed to you won't include the Friend's cost.

- I'm not 100% sure, but I think you need one in your team. That's what I did, anyway.