So in dawntrial a few new artifacts were discovered, one being the key which was created by azem and one being spheres crown. Now there was a very interesting lore video by lore lines that questioned if the crown was infact actually a crown or a broken piece of azems mask.
I'm not saying "yes" definitely it's azems mask, but it certainly looks like * a mask * not a crown. Sphene at one point was also regarded as "possessing a regulator" but as an endless she has no use for one, not only that but sphene died before they and solution nine were ever created. So what is the regulator she had(has)? Perhaps it's the crown itself, another Creaton of azem maybe? Maybe the regulators were backwards engineered from the crown? We know azems true power is the ability to connect people and bring them together, he specialised in magics and concepts that brought people together who were separated.
So how does this tie into the key. Well, it may have been created to rejoin the shards together through interdimensional travel, but why would azem the ancient create this? One possibility is that azem did it for after the final days. During the msq and some of the online tales, were told to just assume azem wasn't doing much. That he was just enjoying his last remaining time before the suffering accepting his fate. Doesn't sound very azem does it? Infact even hades was deeply heartbroken that azem "abandoned" then... so why would the hero of the hour do this? After all this is the same soul who risked the lives of himself and his comrades for some stinking grapes... Unless; he knew the sundering was going to work out alright.
During the wols time in elpis a co vengeance of events happens and many ascians meet somebody they think is a concept of azem, During the pandaemonium raid series a line is delivered from elidibus that says "azem is aware of your presence here" as he seemingly doesn't care whatsoever. Honestly msq really has painted this guy as sort of a jerk. But if azem knew that by your presence you would avert the final days permanently that it makes sense why he didn't act. After all you could only be back In elpis a second time is you triumphed against the endsinger. So then what was he doing?
Well perhaps he created this key to be of aid to us in future, if the shards couldn't be rejoined (something neither you, hydaelyn and probably even azem himself don't want) then maybe this key was his way of letting us explore these shards
Its an azems job to explore the world, document its mysterious cultures and report it back to the higher-ups. But it's more than a job, it's part of who an azem is and what makes them such a suitable candidate for the role. Its also our wol's legacy.
So with this information. What do you think is going to happen with msq? Do you think azem will wind up getting a villian arc that so many are asking for? Or might ultima make her return like pandemonium foreshadowed? What could be the promised importance of the crown? And most importantly... WHEN IS ZENOS COMMING BACK