
A creator with a rival
Ahura Mazda is creator and sole God of Zoroastrianism, yet not omnipotent because Angra Mainyu is nearly as powerful.Zoroastrianism: A Creator Who Isn’t All-Powerful

Cosmic choice
People must choose between the goodness of Ahura Mazda and the evil of Angra Mainyu. The daevas are spirits created to spread harm.Zoroastrianism: A Creator Who Isn’t All-Powerful