some idea about saving:
- it is still kinda slow to change your deck, because it is very slow to reach the "Your deck" screen. this could be solved by adding an "Import/export" button to the main screen too (there are a lot of space at the left side. it could be below the "manage your deck" text).
edit: and the deck importing would be faster too, because now to show the cards at the "your deck" screen after the importing is slow too. if you imported your deck from the main screen, the pictures of the cards wont be loaded at all.
- if the import/export code would be less enigmatic, we could build our deck in a text editor too. it could be a normal decklist with names and numbers. (this is less important)