Mathora

Complete Skyreach at Mythic Level 10 or higher, within the time limit.

Defeat Crown of the Cosmos in The Voidspire on Heroic difficulty or higher, before the release of the next raid tier.

Defeat the following bosses on Heroic difficulty.

Defeat Vaelgor & Ezzorak after all players break each Nullzone's tethers within 3 seconds in The Voidspire on Normal difficulty or higher.

Defeat Fallen-King Salhadaar after everyone /kneels to him before the battle starts in The Voidspire on Normal difficulty or higher.

Defeat Vorasius after every player feeds a hatchling enough to put it to sleep in The Voidspire on Normal difficulty or higher.

Defeat Imperator Averzian after causing him to destroy your banners in the Voidspire on Normal difficulty or higher.

Defeat Chimaerus after plucking all Corrupted Feathers from Sergeant Quackers and rescuing him from the Aln in The Dreamrift on Normal difficulty or higher.