As Demonology i found a way to make this fight easy and just wanted to let you guys in on it. When the fight starts wait for the birds to get close to Yikkan Izu and cast Hand of Gul'dan, immediately switch to meta. the birds dying will grant you enough demonic fury to keep Immolation aura and meta up. Immolation Aura kills birds. birds dying gives more demonic fury, just go full nuke and worry not.