There is way to much complaining about the difficulty of the new GW bosses and and upper chapters. Spending is and always will be a part of this game, that has not changed. If your using gems to buy epots or rev pots your doing it wrong. The newer players act like us veterans were handed all the cards we have for free. I have almost all the cards on monster list including leveled panzers and all gw cards but guess what? I've spent 1000's of hours and who knows how much money getting to where I am now and so has everyone else in my position. So quit wasting time in the forums complaining and go spin the reels, get yourself leveled and spend some money!
It's time to put on your big boy pants and stop expecting something for nothing!