Priestess' Moonsaber

Once these elegant cats were only given to high-ranking priestesses of Elune, but now they ride into battle with all manner of champion, in the service of vengeance.

Riding Requirements:

This mount is available to all eligible characters on your account.
Level 10
Apprentice Riding (ground)
Expert Riding (flying)
Alliance only

Source:

Provisioner Stoutforge in Tiragarde Sound.
Cost: 750

Bundled Mounts:

You will also automatically learn:

Bloodthirsty Dreadwing

Notes:

This stunning, armoured nightsaber may be purchased with 7th Legion Service Medals. This currency may be earned in both battlefields and warfronts in Battle for Azeroth content..

Introduced in:

Patch 8.1

Travel Mode:

Ground (+60% or +100% speed)
Flying (+150%, +280% or +310% speed)

Speed depends on your riding skill.

More info on Wowhead:

Priestess' Moonsaber taught by Priestess' Moonsaber