Please note that the premium currency in this game can be won in a large number of ways without the need for payment. Daily wins in League mode, missions, as well as a large premium currency reward at the end of each week if you played 40+ games in League. A typical player will be able to earn 1-2 free 50 Jewel packs per week.
It's really annoying how the character designs are ripped straight from the Warcraft universe. Nice art style, gameplay looks promising, but I just can't get past the fact that the designs are not original. Rating 1 star and moving on. :(