Disclaimer: I do not own Supernatural. For this story, I own only the Iranian deities named in this chapter.
Covenant Of Fellowship
Meanwhile, the grand council turned its attention to the Iranian celestials among the self-proclaimed deities. Castiel welcomed their presence.
Chief among these celestials was Ahura Mazda. To his immediate right stood the three masculine Amesha Spentas: Vohu Manah, Asha Vahishta, and Kshatra Vairya. To their right, in turn, stood the three feminine Amesha Spentas: Armaiti, Haurvatat, and Ameretat. Meanwhile, to the left of the chief deity stood his six pre-Zoroastrian colleagues: Mithra, Apam Napat, Anahiti, Vrthraghna, Rashnu, and Tishtrya. Last, but not least, behind him stood all the lower-tier Yazatas. Regardless of rank, each of them was augmented by God in the same manner as El.
"Fortunately, Angra Mainyu no longer exists to corrupt the worlds, fires, waters, soils, cows, trees, faithful men, faithful women, and all other good things…" the chief deity remembered a purification ritual to remark about the status of his archrival, only to be interrupted by the tall man in a simple trench coat.
"Save it, Mazda!" the latter cut off the former, "You didn't make any of those things!"
"Watch your tongue, young one!" shot back the main Iranian guest, "Before you were born, I was!"
Indeed, he was older than the final Valiant One. It did not take long for the latter to adopt a more respectful attitude.
"Now, where was I?" the former popped the question for his heavenly hosts.
"Ah yes," he continued, "one enemy is no more, yet another darkness has arisen in might."
In saying this, he and his peers were well aware of the circumstances.
"You could say that," Castiel responded, "and only together can we resist this second darkness!"
At this point, the war deity Vrthraghna stepped forward.
"I can only hope my name will not ever apply to our own resistance," he cautioned, alluding to the smiting of resistance that was his literal name.
Upon hearing these words, fellow deity Mithra felt compelled to contribute to the discussion.
"Let us enter into a covenant of fellowship," the personification of solemn agreements spoke to his peers and to the angels, "so that, together, we may act upon what has been spoken of."
Not one being disagreed before both parties, the Commonwealth of Heaven and the Iranian celestials, entered into their covenant.