This game have probability skill but almost useless, because the skill don't work properly. In some cases, 30% chance skill frequently work during 60% chance skill never work. In addition, different cases exist. Very frustrate.
In some battle, opponent have all advantages such as almost attack cause critical, taken attack by enemy being missed and resist all special attack. Very frustrating. I'm leaving.
I guess this game use pre-calculated battle system. In other words, success of attack and skill determine before battle according to condition of formation phase.
Zorak has auto cloaking ability during attack two times. And he has dizzy immunity and touch immunity with high dodge rate. It is extremely unfair and unbalance.