Swift White Hawkstrider

The Swift White Hawkstrider is a rare drop from Kael'thas in Heroic: Magisters' Terrace. Heroic Magisters' Terrace won't be that hard to solo depending on your class and gear. Pretty much everyone can solo it, if you do struggle bring a few pots or and or flasks. The only downside about trying to get this mount is you can only run it once a day and it has a 1 in 100 drop chance.

The Swift White Hawkstrider is a rare drop from Kael'thas in Heroic: Magisters' Terrace. At level 85 everyone will be able to solo Heroic Magisters' Terrace as if it was nothing. One of the biggest bonuses of farming here is the Netherweave Cloth which sells for quite a bit on the Auction House and quite frequently. It's used in Tailoring, First Aid and other common professions so it will always be in demand. Also if you're an enchanter you will be able to De the Greens into Greater Planar Essences and Arcane Dust which also sell for a good amount on the Auction House.

Additional Notes:

While running Magisters' Terrace hold onto all the greens you get and Disenchant them into Arcane Dust and Greater Planar Essences. Also keep all of the Netherweave Cloth that you come across as the Enchanting materials as well as Tailoring materials are always in demand on the Auction House and can net you a nice profit.

Netherweave Cloth

Greater Planar Essence

Arcane Dust

Getting a Swift White Hawkstrider wont be that difficult since the instance is extremely easy to solo. The downside of this is you can only run this instance a single time each day which doesn't make it hard to acquire this mount, just extremely time consuming and a lot of dedication.