I've watched your video regarding the Uber Atziri kill. Would you mind to share a detail skill gem setup like what u did?
I notice u used 6L shockwave totem with offhand and u changed to tabula rasa during the heal phase. Do u mind to explain what u did there along with the skill gem setup?
Re: links in the staff in my original vid: Shockwave Totem, Chance to Flee, Increased AOE, Faster Casting, Increased Duration (so you don't need to recast it during spawn phase -- though you don't need this), Blood Magic (if your mana is an issue -- though if you 4 link it you don't need it). I would link it but I already have changed the colors for another set of tests I was doing for something else. However, use DD instead (read below).
For kicks, if you want to use a melee skill to get past her spawn phase, you can also use Ground Slam/Chance to Flee or Lightning Strike (Ground Slam is safer). Here is a quick vid snippet using Ground Slam for a low dps character in the spawn phase to show you how it can work:
That being said, Double Doryani is way better when I tested it (I haven't tried it in a long time), and you don't even need Desecrate since they are undead:
My recommendation for the easiest and safest clearing of spawn phase for a low dps, and refills your flasks, is Double Doryani.
Drop your Shockwave Totem/Increased Duration/Chance to Flee once at beginning of spawn phase (not really needed, by why not), and then just DD/Chance to Ignite/Conc Effect (you could also probably try Inc AOE instead of Chance to Ignite if you want).
As I stated, I changed my build significantly for Uber Queen. It is statistically doable with default Aegis builds variants, but there is a much higher chance you will die (I wish they didn't gate Uber to allow more people to try things), thus I went Safelli's and Evasion. My personal goal was to finish the content as a melee tank without dying (plus some other constraints).
I basically got Ondar's guile and Phase Acrobatics -- swapped to a few pieces of evasion gear to avoid projectile damage as much as possible (thus not taking Unwavering Stance), and a few reduced mana nodes for increasing my max resistances.