Talents Direct link to this section
I recommend taking the standard M+ AR talents.
Pulls Direct link to this section
Trash to Azhiccar Direct link to this section
Interrupt as many Gorge casts as you can, or you'll take a lot of damage when the mobs die from Overgorged (similar to old bursting affix, but based on the mobs' stacks).
Azhiccar Direct link to this section
Have a Reaver's Glaive up for every Invading Shriek to nuke the adds and funnel the damage into the boss. Try to also have one for the intermission to take care of one of the add sets. During the intermission, you can CC the mobs to stop them from being pulled in for the duration of the CC. Sigil of Misery works well for an add set no one is hitting.
Trash to Taah'bat and A'wazj Direct link to this section
Alacrity on the Phaseblades can be purged with Consume Magic. The Tamed Ruinstalkers can be stunned to prevent their Warp charge. If they're close to death, you can also stun them when their Warp comes off cooldown and try to kill them before they blink away.
Taah'bat and A'wazj Direct link to this section
Do not overlap the Binding Javelins, but you can make a venn diagram to cleave off of them onto the boss. During Arcane Blitz (the intermission) make sure your Warp Strike line goes through the boss. The DoT on those can stack, so make sure you don't get hit by another player's Warp Strike by accident. The boss is immune during this phase, but you can sill generate souls from them making it worthwhile to Sigil of Flame and Chaos Strike still.
Trash to Soul-Scribe Direct link to this section
Make sure to hard-swap to the spirit when Pactspeakers start casting Consume Spirit.
Soul-Scribe Direct link to this section
Whispers of Fate spawns a copy of your character that you must run over to pick up. Picking it up gives a damage bonus Fatebound, whereas failing to do so before it is hit will give you Wounded Fate (A DoT and haste decrease). During the intermission, you can stagger picking up your 3 souls to increase the duration of Fatebound, as picking up a new soul refreshes the duration and increases your stacks.