On the flip side, almost everyone at the wall is dead. So, if it IS a Rhalgr summon, the ones that would witness it are few and far between. The Scions, our traitorous pair that called the spider mechs, and whatever Garlean reinforcements might make it in time. Maybe some of the GC might get a long distance glimpse. All in all it might be able to be kept a dirty secret by the Scions.
Maybe.
Edit: A thought occurs to me, though, regarding what the Griffin says in the various language translations. If it's a being that doesn't require prayer and whatnot for sustenance, maybe the prayers of the dying are merely to give it shape. The actual "power source", if you will, being Nidhogg's eyes. Or perhaps they will function like the horn artifact that powered Alexander, allowing it to sustain itself without need to temper and have worshippers.
Granted, the latter case still means it'd drain the planet's aether... but omission of details could be attributed to the Griffin's proclamation. In fact, we don't know much he says is true and how much may be fabricated, possibly by the Ascians. Unreliable sources have been a thing for a while now in FFXIV.
... Maybe this is just how Elder Primals like Bahamut and Odin are formed.
Maybe.
Edit: A thought occurs to me, though, regarding what the Griffin says in the various language translations. If it's a being that doesn't require prayer and whatnot for sustenance, maybe the prayers of the dying are merely to give it shape. The actual "power source", if you will, being Nidhogg's eyes. Or perhaps they will function like the horn artifact that powered Alexander, allowing it to sustain itself without need to temper and have worshippers.
Granted, the latter case still means it'd drain the planet's aether... but omission of details could be attributed to the Griffin's proclamation. In fact, we don't know much he says is true and how much may be fabricated, possibly by the Ascians. Unreliable sources have been a thing for a while now in FFXIV.
... Maybe this is just how Elder Primals like Bahamut and Odin are formed.
~