Add Multiple Copies of a Card to Collection

Currently, when adding cards to your collection, you can only add a single copy of a card. This means that, if you wish to add 3 copies of a card (for purposes of knowing if you can build a deck for example), you need to add the card, then go and change its value.

My suggestion is that when selecting cards to add to your collection, pressing the + will increment a number above the card, showing the amount to be added to the collection.