It's quite fun, and I like the new cards, they've been pretty good in my hunter but they synergize REALLY well with a Druid deck. Gonna have to really get into gear to beat Heroic mode though :/ that's all I have left.
Heroic feels like more or less like you need to draw everything in a specific order to win rather than having a good deck tbh. I main druid and if I don't get a innervate at start I might as well just concede without even playing a single card.
I have to say I got bored of it even at the start of the arachnid quarter. It's fun and all (as a WoW fan and player I have to say they make amazing homages to the raids tacts and mechanics. And also Kel's speaches are hilarious) but it got pretty boring to play against AI especially at hc. Maybe its also because of that TERRIBLE release day lag. I spent like one hour against Grant Widow just because the animations took such a long time to pop up. Also maybe its because I like the game less and less as I get more and more into mtg.