*Mass release*
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The offensive charge is a skill that focuses mainly on speed.
Whenever a mage switch to battle mode, or more appropriately, connect his core, for a brief moment after that, a surge of energy flows through his body, accelerating the cells capabilities.
As this happens, just like a surge of adrenaline, all the mage's physical capabilities — especially the speed and strength, evolve to another level.
The suddenly increase is enough to help them battle an F-rank beast and win even if the mage is just a basic rank mage. Stronger mage can even perform greater feat but there are two little problem
Firstly, it last for only a short period of time which won't do much in helping mage who cannot finish of their opponent in one quick strike during the period of boost— just like how Kox's first offensive charge felt like a waste on Zain who dodged it effortlessly.