Talk:Basics of Battle/@comment-25856498-20160706112209

There is one possible 6-card deck: the starting deck with the 6 cards given to you.

There are six possible 7-card decks: the 6-card starting deck plus any one of the six remaining cards left to find in the training camp (you can open the 4th chest that contains the starter Epic first, I think)

And of course there are 58C8 = 58!/(8!*50!) = 1,916,797,311 8-card decks: all the possible ways to choose 8 cards from 58 cards already in the game.

For a total of 1,916,797,318 possible decks. If everyone in the world played CR, you can assure that at least four people will use the same deck. Following population trends, if CR doesn't introduce any more new cards forever, you can guarantee that at least five people will use the same deck somewhere in the early 2020s.