PVP is no Brain feature. Just using meta unit and you already Competitive. No need to think any strategy, just use your credit card to roll the unit. Also, rate up is really lie. I got 3 3 star unit and no one is from the rate up. Everytime there's total assault (it's like raid) update, it's always a unit or two with the most effective against the boss banner available. At this rate it's just like another P2W game. Even if the publisher give a lot of premium currency, Rate up is just another lie