For 10 points, identify this symbol of falsehood that is the servant to Ahriman in Zoroastrianism.
According to one story, this figure, whose name means "the man with a sarcastic laugh," was a king who made a sacrifice of three humans to Ardvi Sura in order to rule over the "seven regions of the world," but only if the rest of humanity would be destroyed. Another story recalls how this figure killed the first human King Yima and enslaved his sisters Arenavak and Sanghavak, who took his form. This happens until Fereydun enslaves him under Mount Davand. This figure is described has having eighteen wings, eighteen eyes, and eighteen fangs, as well as three jaws which represent pain, more pain, and death. His three heads symbolize his dominion over lightning, storm clouds, and disease, and his lower body is that of a beast, while two snakes come from his neck. For 10 points, identify this symbol of falsehood that is the servant to Ahriman in Zoroastrianism.
According to one story, this figure, whose name means "the man with a sarcastic laugh," was a king who made a sacrifice of three humans to Ardvi Sura in order to rule over the "seven regions of the world," but only if the rest of humanity would be destroyed.
Azhi Dahaka or Zahak or Dahag