Talk:Buildings/@comment-187.189.209.197-20141226175432/@comment-25151790-20141226210550

You can store cards in your collection (Edit unit > Collection tab). This allows you to store up to 100 cards, with 10 pages and 10 cards per page. First page is free and each extra page costs 400 jewels.

As for cards not in the collection, you can hold up to 200 cards by using the Card Limit +15 from clearing 10-6 and buying Card Limit +5 items (150 jewels each).

Another way to save space is to leave cards in your Presents until you need them. Although you can only see the last 100 cards, its storage capacity is (seemingly) infinite.