Hearthstone. It's fan. But the most important that when playing you re developing your logical and strategic thinking. I advise everyone! But look, do not quit your job, because this game will take all your time.
Hearthstone is very boring and it depends a lot of luck.
You still need to set up your deck strategically but it is very based to luck as the cards come to your hand "randomly". I don't know how you can control this fact and this is why i stopped playing Hearthstone.