Board Thread:Questions and Answers/@comment-92.154.52.161-20130114103741/@comment-82.28.184.7-20130114220629

You go up to 55 cards once you hit the early 30's (I dont remember exactly but I think it was 32 or 33). You go upto 60 cards once you hit level 71 (I know thats exact as I hit that today).