I have noticed that in some matches they give me the same cards when I mulligan, it is quite frustrating to try to fight if they will always give me the same cards in a specific order and pray for luck. The same is also true for bosses that have a sequence.
In the second confrontation I had to try more than 5 times because if I spent resources on minions I would not have damage to kill him but I would kill his hero power minions because sometimes he would get 6/5 or 5/4. Cho'Gall is also that horrible boss because when he dropped you to 18 or less health your deck is full of meh demons, a third of minions were trash, some decent minions and only 7 or 8 minions had good statistics to block C ' Thun on turn 11. And finally the shadows that can only be destroyed with a poisoned knife juggler and the one that destroys a random minion, why do they put synergies with weapons if they cannot be destroyed with the spell that destroys your weapon and deals equivalent damage enemy minions? Has no sense.
And the worst thing is that they will continue to make another book but about mercenaries, if they use this format it will be very tedious and boring with cards that do not make sense to put or a forced plan.
P.S Sorry my bad english