i found a video that shows you have to avoid the combo's might be worth a watch may help ya abit just a 2 and a half mins showing ya how he does it
On this encounter we had our tanks drag the boss back to where the stairs were, the boss will cast Devastating Combo, what you will be looking for is blue lines in the air showing the direction of his strike. He will have 4 different strike that you will need to look for. Right ,Left Forward, and Stomp.
Each of his strike will cover at lease 180 degrees in the direction he is striking. so if right is strike then move left, If left move right, if forward then run thew him to get behind, then his stomp u will need to run out 10 yards away from him. u will need to dodge 5 of these strikes to gain Opportunistic strike that will inflect 500,000 damage each time. after the combo the boss will be doing increase damage so make sure to use a defensive cool down each time it ends. You will need to save one of your major cool down for when you are in the gas phase.
Also note: that you can add more people to dodge these combo's for the opportunistic strike, balancing this will depend on how your add controls are.
Rinse and repeat!Rinse and Repeat Then Win!
Over all this was a pretty easy fight if you killed Elegon then this will just take a few attempts till your tanks get how to dodge the combos
Note that we were able to keep one melee full time on the boss dodge combo's since we 2 healed this encounter
Also bit for add control and info
This fight its all about handling the adds and tanks dodging the Devastating combo, so they are able to gain the Opportunistic Strike.
Add Priority should be Emperor's Courage, Then Emperor's Rage and then Emperor's Strength.
Once the Emperor's Courage spawns it will target a tank and start to fixate on them and head towards them, if the add reaches the tank it will place a stacking debuff on the tank that will decrease movement speed by 25% per stack and also buff the add with a 100% damage increase each stack. Note that they will only be able to be attack from behind and you can in-snare and slow its moments.
Once the Emperor's Rage spawns it will fixate on a random raid member, this excludes tank. and starts attacking its target till it is killed.
Once Emperor's Strength spawns we had our hunter taunt it and kite and kill this add, he will also cast Energizing Smash it will be a large circle on the ground that you need to move out of.