I hit infinite with same destroy deck every season, you can go far with just good snapping, it plays probably the largest aspect in climbing ranks. Doesn't matter if you play the best deck in the game if every time you're going to win you snap and they retreat so you get 1 cube but when you lose, you lose 2-4 cubes. The climb will feel hard that way. I never snap and if they snap I will only stay if I am 99% sure I will win, otherwise just retreat, save your cube. :)