I have to say way to Blizzard, not only did you unnerf cards for classic you unnerfed the bugs too! For all of you who are unfamiliar to this, what you do is you take a card, hold it out in the middle of the screen then unplug your mouse! As long as your cursor cannot more the card will stay there and indefinitely hold your turn!
I honestly cannot believe this somehow works again. Fix ASAP after 3 games of having to quit to this mechanic is really makes me not play at all. I just wanted to have a nice game of hearthstone while I was on a break.