Sorry I disappeared-

Since i will be mentioning about mythrila quite a bit for now on, let's considerate what it is:

Okay, we know mythrila is a crystal like substance, with magical properties that the Vesani used to make stuff, from magical trinkets and jewelry:

All the way to complex stuff like: Planetaries, consoles and energy cores, tools weapons and even golems. All pretty magical in nature.(We can also notice from the concept arts that it’s appearance changed according to the magic and craft techniques applied to them).

So, we know they could use mythrila like no one else. In fact, Ymelo used Mythrila as a base to create the sun stones, another Vesani Marvel.

Not only the fact that Ymelo’s creation of the Sun stones, pretty much confirms that Mythrila reacts and adapts it’s magical nature to whatever techniques are applied to them, But that those properties can be enhanced, Since we know that the Sun stones were pretty much programable via magic:

But where do they got it in the first place? Well i have an small theory based in “Trust me bro” that i would like to share...

We know for an fact [Thanks to Lor] That all the Vastaya originates from Omikaylan, In the Vastayan glades:

We also know, the Vesani were curious by nature. And we also have this little image:

So, let’s go to my theory, shall we? 

What if Mythrila is actually some kind of  crystalized sap? It could pretty much work like magical amber. Only the Vesani would know how to use it because it’s origin could pretty much be the giant trees in the vastaya glades. The place their own race originated too. And since they are curious by nature, it’s plausible that the vesani would take their time to fiddle with this magical amber and end up discovering new uses for it’s magnifique properties...