Before the battle starts, buff with Beckoning Armor first and then Spirit Guardian. The armor lasts longer than the guardian so when you have to switch back, the times will be closer together that way. Taunt boss or a melee add first, position yourself and cast Agony Totem, then block cast everything going forward. Before you switch bars, hit something with Heroic Slash and then switch.

Next, be sure to keep taunt on the boss or priority add. Cast Unnerving Boneyard directly underneath you and begin ranged taunting all adds you can with Inner Rage. Keep a close eye on your magicka, don’t overtaunt and run out of resources. Your beckoning armor should pull in anything ranged, and anything melee will just walk up to you. Be on the lookout for adds to drop and when one does immediately Mortal Coil to it. Use Necrotic Potency as you can after that.

By now, it is probably time to refresh buffs so hop onto your backbar, refresh your armor and spirit, reapply your totem, slash an enemy, and get back to front bar. Use your ultis wisely and frequently. Taunt, Boneyard, Coil, Potecy...Rinse and repeat until battle is finished.