I've tried a few different times to get into this game... I play through an adventure, get some 'cards' and then try to play against other real people and get crushed by insane decks at the Lowest ranks and quit. I just did that again, quit for like the 5th time.
It could be such a fun game, but if you have to play 20+ games a day and spend who knows how much on 'packs' in order to disenchant and then craft all the good cards just to be competitive even at the lowest starting rank of the game which should pair you against someone with equal experience/power in your deck... ugh.
Sorry just ranting. Fun, quick, casual, unless you want to play against real people, then you're just fucked most of the time.