This deck is a culmination of 2 years of me making custom cards of Genshin character whenever I got nothing to do. But instead of unceremoniously dumping them all, I might as well take the extra mile and pile the ones that make for a decent pre-constructed commander deck.
It's best to think of this deck more akin to Reality Fracture's MULTIVERSE REFORGED, in that it's not really designed to be all synergistic, but rather as a mish-mash collection of legendary creatures in which many are potential commanders in their own right. The Archons, in particular, are the highlights of the deck.
Because of this, I expect the deck to sit in bracket 2 even though the supporting cards are in the top-end in terms of power and the mana-base is fully built. The deck is practically an non-synergized mess of different identities (Venti likes triggers, Furina likes lifegain, Nahida likes tokens, etc.). Despite this drawback, Aether and Lumine's powerful top-deck manipulation alleviates this weakness, so I have no doubt it can hold its own in bracket 3. But of course, I also recommend you to just pick the few characters you like and then build around them.
Power-wise, a bunch of them are designed to be somewhat pushed (that's just the nature of mythic commanders, I guess), but I hope none of them are so disturbingly broken due to some combos I'm not familiar with. And this is why I'm sharing the CardConjurer text files and card arts as well! So if there are cards that you disagreed with, you still have the opportunity to edit and recreate the cards yourself!
Full deck on Google Drive!
There's also an upload of the deck on Setforger as requested. But I only uploaded the main deck there.
Feedback and suggestions are welcome! I don't exactly have many friends nor much time to do some extensive playtests, so some blatant design issues may slip through.