Elements and etc

The elements are Water(puts out fire)->Fire(wind feeds fire)->Wind(earth is move by wind)->Earth(earth doesnt conduct lightning)->Lightning(water conducts electricity)->Water. The ying-yang attributes are lighty different. Dark power involving powers of evil. Light powers involving powers of good. Light and dark powers can be used by any one depending on the class. The light power can beat the dark power and dark powers can beat the light depending on the skills.