100% pay to win. That's all that must be said seeing as you can't get any legendary units without paying $10 minimum, and if you do have the patience to get enough magic dust to get a legendary unit (1000 dust for every unit, but you only get 10 dust at a time) all you get is a support unit that does less damage than a common unit. I would not recommend this game to anyone but if you must see for yourself or you can pay 100s of dollars at a time, then be my guest.