People amongst the Elements

When thinking of people and elements. One is drawing power from a natural place.
     Deriving in it, bringing knowledge from it, and showing mastery on it.
     All thus from this showing, one can attain this willed power from 1 natural element to up to 4 natural elements.
     Elements have caused will and knowledge to be used for strategies and ways of combat. Showing the many benifits that came like higher attack power of that native element and resist or immune defenses to that element as well. Showing that however came the negative sides to elements like being decreased in power and weakened to a certain element or causing no damage to one element.
     As far as speed, endurance, strength,  and power goes... high discipline surpasses the need here of them all. For what is wielding the elements without it?
     The knowledge overtime wasn't only used for combat, but was used and inhibited passively as well. It allowed many things to be created within elemental areas like potion