Got some games in today on the preview weekend. Love'n it!
One thing came up…Stun is nasty now. The way we read the card "Must use an action to discard stun, and can't take any other actions the turn you have stun" seems fairly clear that basically anything stunned loses it's whole turn now instead of just a single action.
This was particularly nasty in our game as one of the heroes has an ability to stun all minions who start adjacent to her. So basically those monsters get locked down until she moves or gets knocked away or something.
One of the players thought the card could be read another way, so that you only lose a single action if you discard the card as your first action, but the rest of us weren't sure.