From the Mondaji wiki, so take what you will:
Conceptual Immortality: As the embodiment of eschatology, Azi Dahaka can not be destroyed by any particular methods, but can only be temporarily sealed. The only way to defeat him was associated with the release of spiritual power in the form of tests (the creation of an equivalent concept, the ability to "weaken" Demon Lords), which dealt a mortal blow to the three vulnerable points: the skull, shoulders and the heart. However, the deadly attack could only come from humanity and it has been revealed in
Volume 12 that the Divine Army tried to kill him but Azi just resurrected himself.
[Avesta]: Azi Dahaka's "Another Cosmology", which allows him to add his enemies original power with his own power "Another Cosmology" and create the mirror opposite Gift that neutralizes everything, following the Dualism Theory of Zoroastrianism. Storyteller stated that Azi Dahaka can use his "Another Cosmology" to build duality with the fastest speed, as long as this Gift is there, no matter what situation and kind of enemy he faced, his chance of victory will never go below 50%, also no matter how many Gods one can gather, it is impossible to win against Azi Dahaka because the more Gods that fight against him, the stronger he becomes. By imitating his enemy's Cosmology's antithesis and absorbing that into himself, he can limitedly use it. [Avesta] is very powerful in that it can neutralize Authority of Universal Truth (
Brahma) and even the power of the Chief Gods. It was stated that the numerical is meaningless to Azi Dahaka's power and no one can win against his power if they do not have the same
Zoroastrianism's Cosmology as him. So far, Azi Dahaka had used the [Avesta] five times, such as:
Point is, just don't **** with these guys.
