adding cards is really not user friendly as it once was. You use to have the quantity you were adding as an option.
Plus they seem to have removed the option of seeing cards last added as a view option..
this was especially useful when adding a card to inventory , then placing it in a deck once it appeared in the list.
Now you have to manually search the card from your inventory.
EDIT: ok, i have found how to see cards in order of last added, it's in the drop down box in "columns"