Good and Evil in Mazdiyasnian's creed

Aryanians believe in good and evil since a long time ago. Evil versus godly. Aryanians attribute rain, brightness etc ... to goodness and godly and darkness, drought and such, to the evils. Therefore good spirits which protect brightne'>S, heat and life have always been in challenge with bad spirits like darkness and drought. Their battles take place between the earth and the sky. the belief of "Dualism" has been existed amongst the Iranians and Indian- Iranian Aryanians for long before Zaratousht. But Zaratousht had a unique approach in citing his theories. His doualism theory has monotheism basis behind it. However good and evil are not different individuals both have been created by Auramazda