This mount drops from rare elite "Alani" which flies around the Vale of the Eternal Blossoms. The only way how to kill this rare is to use item called Sky Crystal which will allow you to remove the Cloud Protection of Alani and pulling it down where you can kill it.
Although it is a BoP, it can be traded in a party to a party member who were eligible to loot it, so you do not have to worry, that you will not get the loot. You will have Master Looter rights and you will be able to put the mount into your bags alone. It can be looted in Xrealm zones.
Note that in order to use this, you must be exalted with both Order of the Cloud Serpent and also August Celestials.
I only have one at this moment and im willing to sell it for 40eur, the market price.
Payment will be done by paypal before we kill the rare spawn. Add me on skype as .....deleted..... if you are interrested.
Mount available for EU realms alone! Sorry for not specifying this from start!