Major Spoilers for all Expansions - Some general things I didn't understand

[Cleretic]

It is stated when we are given the crystal that engraved on it is the signature spell of Azem. We learn that the Echo is just the remnants of the Ancients powers, and that any specialties the echo has, like Krile's aetherial tracking or Mikoto's ability to see into the future, are just specialties of their Ancient selves; like Emet-Selch and Hythlodaeus's soul sight. The only reason the crystal works is because it is being used by us. Only a shard of Azem is able to activate the spell. This is shown as the reason why we were always able to find allies for our fights, it's what our Echo does, we were just finding them unconsciously before, now we are using the crystal as a medium instead.

It should be noted that this is a retroactive change to our echo, as I doubt the devs thought far ahead as to what our specific echo was capable of, if anything at all. They did say that the echo manifests differently in each person, so they probably had ideas, but when it came time to implement it, they just stuck with "the power of friendship".

I know that scene well enough to be able to immediately cross-reference it, and, no. Sorry. This is just straight-up not what the scene describes. Your first sentence is correct, but everything else is nowhere to be seen.

I mentioned before that there was a member of the Convocation who opposed Zodiark's summoning and defected. One whose office was left vacant...

Defectors having been deemed unworthy of commemoration, no crystal exists for the individual in question.

...Or shouldn't exist, at any rate─and wouldn't, had a friend not created one in secret.

A crystal bearing the forgotten name of his office, along with a magick of his own conceiving─a singular incantation embodying his spirit.

Among all the offices, the Fourteenth was most unusual. For while the rest sat in Amaurot, its holder was charged with gaining an intimate knowledge of the wider world.

In the course of his duty, he traveled the length and breadth of every land, and befriended countless folk.

He encountered troubles too, of course. Matters which he could simply have referred to the Convocation. But that was not his way.

Nay, more often than not, he would call upon his comrades, and together resolve matters themselves.

Such is the magick sealed within that crystal─the magick to summon the stars to your side.

In time of greatest need, should you wish upon it with all your heart, it will surely answer your call.

And now it is where it belongs.

This is the transcript on Gamer Escape, but I've also had a recording of it sitting around since 5.5, and can confirm it's identical save for the pronouns. If I'm looking at the wrong part of the scene, go ahead and point me to the right one, I'm always open to being corrected.