The latest Hearthstone patch
featured the card collection account wipe
and other balance changes
. I've taken the liberty of recording a video and demonstrating the updated methods in crafting and disenchanting cards. As you start accumulating cards, you'll eventually run into excess copies of cards that you'll no longer need due to the 2 card limit and 1 legendary card limit.
I have to say, that the gold Deathwing did look pretty cool before I blew him up.