So far I just need luck to have behemoth and/or Ymirah cr in the same hand and just walk right through their teams as long as I dont get 3 2 stars and 1 3 star all in 1 hand in the last round I am good. Everyone else is either defeat or great low star gappers like tormentah.
To preface, I've completed all the seasons (including the bonus season before they made it easier) and I have to say, this was the most frustrating one, yet. Notice I said frustrating, not challenging, and definitely not fun. Normal mode and Hardcore weren't too bad, but going back and trying to get the stars on some of those levels was riDICulous! It was a stupid, frustrating grind, waiting for the AI to not draw certain cards/combos, otherwise you were screwed.
After this season, I really, really hate this game mode. I realize the current owners (gorallion and co.) inherited this mode from the previous management, but I think it's gone downhill, and not sure if it's salvageable. Maybe make the AI better but play with a normal (25 stars, not stacked with OP cards) deck? I dunno. But trying to get KOs against Grax, Ymirah CR and co. gets really stupid, really fast...
That was exactly how I made a deck with both behemoth and ymirah cr in it. I kept failing the star missions because for some reason almost every season there is ymirah cr for like a 3rd of the matches I thought "forget this you want OP cards I will give you OP cards"
The biggest change I want however draw=free retry not an auto victory for the comps, with draws as a form of victory for them they have one more way of winning than us creating an unfair advantage that only makes the 3 star missions so much more annoying.