Quoted By:
It's actually incredibly addicting.
All of the packs you win through the mystery box contain cards you can trade in game.
Which is a nice change, since I'm not about to go out and spend a fuckton of money on physical cards for a stupid code for a booster ( originally only way to get trade-able cards ).
It takes time, but it isn't difficult to obtain new cards and make a pretty flawless deck. I haven't been playing that long and I have a huge collection of cards already.
Sad to hear most of you dislike it. But, oh well.