Khanjar-Khanayr prophecy

[Anoze]

Hey guys I was working through a custom campaign I'm creating and wanted to include the completion of the "ruby wing" prophecy told to Khanjar-Khanayr (unique zahhak azi in Rahadoum) by Ahriman. Problem is I can't come up with anything decent besides a red dragon, which seems too generic. I plan on sleeping on it and coming back to it tommorw, but would love to hear some ideas from you guys, Thanks, reference link below.

Khanjar-Khanayr