Zarathustran eagle
A Zarathustran eagle is the current Greater Eidolon of Ashtan, having been birthed through the merger of the soul of Zarathustra and the Guardian of Chaos to mend the damaged Well of Chaos. It has the ability to fly, which is somewhat unusual for city guardians, but it is a bit weaker as a result.
Zarathustran eagles have been featured as charges in Ashtani heraldry and other symbology since long before the Modern Age. Depictions of symbolic eagles bearing broken manacles have been found on hoplite armour dating from the third cycle of the Ashtan-Shallam Wars.