Quote Originally Posted by Cleretic View Post
This is still an unanswered question, and one where the clues we have are... inconclusive.

We know Speaker Loquloqui made it work once, and that later on, Preservation got it to successfully Do Its Thing a few times (how many depends on how you define 'success'). 7.5 will include us finally getting to make it do something, too. So all we really know is that successfully using the key cannot be contingent on the Azem crystal, because we're the only person that's ever been able to add that to the equation; so whatever makes this run isn't the crystal, but something else entirely.

My best guess is what some other people have echoed; that the 'key' is just a facilitating tool for a greater system--perhaps one built off of something similar to the spell in the Azem crystal. We can make it happen without much struggle because we already have the thing that it's facilitating, while the millala and Preservation had to figure out the other half of this equation from base principles.
If that theory is true, it makes me wonder what this greater system is and who made it and why.