Valarjar Stormwing

The beating of its wings sound like the rolling of thunder in the distance.

Riding Requirements:

This mount is available to all eligible characters on your account.
Level 110
Artisan (300) Riding

Source:

Valarjar Strongbox (Valarjar Paragon reward).
The Black Market Auction House (rarely)

Notes:

There is a chance of obtaining this mount in a Valarjar Strongbox, which is a new 'Paragon'-level reputation item in Patch 7.2. You may earn one of these chests for every 10 000 rep you earn with Valarjar (Paragon), which is above the normal Exalted reputation for this faction.