Tomb of Sargeras Race
Congratulations to Korean Guild <AFK R> on World Third Mythic Kil'Jaeden!
Their guild page on Raider.io also lists their composition for the fight. Just keep in mind some players may swap specs or gear before logging out to preserve the mystery of the composition.
Similar to Method and Exorsus, a large number of rogues were used for their melee composition.
This mount is listed as a drop from Gleaming Footlocker; one could speculate that based on the mount's flavor text, the Footlocker is a reward from Paragon of the Army of the Light. The Army of the Light faction also has the amazing Lightforged Warframe mount for at Exalted.
Check out all the known Tier 21 set bonuses and their models in our Tier 21 Armor Set Guide.
Item - Druid T21 Restoration 2P Bonus - Yseras Gift Applies HoT:
Check out TheStatman's comment for the basics on farming these pets, and click on the pet links in this post to learn more about their type and movesets.
Learn more about 7.3 PTR Build 24651: Datamining Including Khadgar Raven Mount, Antorus Raid Testing, Whispers of a Frightened World, New PTR Transmog.
For more transmog updates, check out our Patch 7.3 transmog coverage including Snapchat-esque flower crowns!
Taeshalach - likely drop from Aggramar as it plays a major role in the encounter abilities.
As this is a PTR post, general spoiler warning that it will reveal upcoming parts of the storyline.
To learn more about the Argus storyline, check out our Argus Part 1 Playthrough, Argus Part 2 Playthrough, Argus Part 3 Playthrough, Argus Part 4 Playthrough, Analysis of the Antorus, The Burning Throne Dialogue and Patch 7.3 Datamined NPC Dialogue articles.
The second encounter, Felhounds of Sargeras, will drop the Antoran Charhound mount.
On Friday, July 28th we will be conducting our first raid test of Antorus, the Burning Throne. If testing goes well, the zone will remain open over the weekend for Normal mode testing.
The latest 7.3 PTR build added more mount, pet, and title rewards. Check out the full mount and pet sections for new additions!