This is extremely well crafted. There is some insane synergy going on here. Lots of choices, lots of options. Lots of answers. I am curious about your choice to run
Auramancer. I don't see a way to
flicker it, and I don't see a sac outlet to sac-recur? Every enchantment and artifact is within
Sun Titan range, and your running Thassa, So I appreciate what's going on... If your looking for a redundant safe guard which really speaks to my way-back-when old school mono-white
roots (circa 4th edition -
Ice age), Why not run
Hanna, Ship's Navigator? She also falls within the
Sun Titan range, ... so they have each others back, and
Hanna becomes a redundant safety for your entire board as well without flickering or sac-recursion.
Again Fantastic job.
Deep Freeze is also a great Anti-Commander card to sideboard if ever you play more then three opponents. I see your already running three.
At 10 artifacts, it's pretty good
odds of drawing into at least one artifact in the early game if you want to try
Artificer's Intuition ->
Spellbook ->
Necropotence. You're running Ethereal Amor and
Steel of the Godhead So I wouldn't worry too much about the loss of life effect of
Necropotence. We've also established that the artifact you would discard can be recovered by the
Sun Titan,
Hanna Ship's Navigator, or
Auramancer. So, it's well worth giving up the artifact, and a chunk of life in the early game... After one or two games though, You're play group might start to build around that exploit if you abuse it EVERY game.
I was honestly considering building a Voltron Deck with ZuR from scratch, but I might actually build this instead <3 <3 <3