I’ve posted my overall thoughts about Hearthstone in the past, but the TL:DR is that its less a card game and more of a graphical dice simulator. It looks like a M:TG clone, but the gameplay is a lot more like Candyland, where it’s less about the decisions you make and more about just watching things happen based on luck/dice.
That said, as a ‘TV goes to commercial, let’s kill 5 minutes and CoC/BB/FO:Shelter don’t need to be checked’ option, you could do worse. The most recent addition, the Tavern Brawl, plays to this strength, as it’s a completely randomized clusterfuck.
Basically every week a new Tavern Brawl starts, and each one has unique rules. Last week it was spells-focused; every time you cast a spell, the game would summon a random monster of your spells cost for you. The week before that, every time a creature was killed, you gained a random card that could boost troops or harm others. Before that it was a deck full of spiders, with said spiders giving you a random creature when they died. Before that it was two pre-made decks of silly, broken OP cards.
In other words, winning or losing in Tavern Brawl isn’t the normal 90% luck that a typical game of HS is, it’s 99%, and the deck building aspect drop from the usual 10% to 1%. And its great fun in very short bursts (one or two games a week, just enough to get the free card pack), because you can’t possibly take the games seriously or care if you win/lose. Just make your clicks, watch the explosions, and return to whatever you were watching on TV when the commercial break is over.
Hopefully Blizzard continues down this path with HS, just embracing the fact that it’s not so much a game as it is a WoW-themed dice simulator, and continues giving us more stuff like Tavern Brawl in 6 months when the next game update happens.