Armored Blue Wind Rider


 * "They are quite restless when they aren't soaring through the skies of Northrend." - Mei Francis



Source
This mount can be purchased for (not counting any discounts from reputation with the Kirin Tor) from  in the city of Dalaran. This can only be purchased by members of the Horde.

Mount Journal
''They are not native to Northrend, but they have adapted extremely well to the cold. -Mei Francis''