i90 AF and the 'Primal' weapons.

[Gwaeron]

I'm not sure about the mechanics behind conjury and thaumaturgy or how the weapon mechanics work in order to augment the magicks.
But the following strikes me as strange:
* The Crystal Tower is the tomb of the first Allagan emperor
* Allag was founded in the Third Umbral Era.
* Allag flourished during the Third Astral Era.
* Allag fell as the Fourth Umbral Era started.
* The discovery of magick brings the Fifth Astral Era.

Why does the crystal tower contain weapons that augments magick? Did any other civilisation after the fall of Allag guard the tower (and left weapons behind) for some reason? We know Nael van Darnus is of Allagan descent and that his house are the keepers of Allagan secrets, so nothing is impossible. One thing seems pretty certain though, if the weapons are from the crystal tower, at least some of them were placed there long after the tower was built, and most likely after the fall of the civilisation that built it. But it does not seem unlikely that a construction like the crystal tower would be worshipped in some way even after the fall of the Allagan empire.

Does anyone remember if they mentioned when the defense mechanisms were put in place in the cutscenes leading up to Crystal Tower? They could have been found outside as well (which seems likely, since no-one, including Rowena, should have been able to salvage the tower before the defenses were broken). Maybe they are the weapons of others who have tried to enter, but failed...

Edit: This also makes me wonder... Where (and when) the heck do the Allagan Grimoire of Healing/Casting, Allagan Scepter and Allagan Cane come from? Especially the grimoires, how did the Allag know about the geometrical and mathematical figures required for arcane magicks that weren't invented until the Fifth Astral Era?