Bahamut and Eikons

[Frederick22]

But would be a being like Ifrit or Gaurda could have called Eikon for the allagans?
Or they used the word "primal" too for the lower ones?

Also Moose another reason of what on the 3rd astral seem to be numerous Eikons, could be beacuse on that time Hydaelyn was stronger than now? ( the light crystals as an example )
Somehow more aether concentrations and that caused to the summoning of much stronger entities than on actual days?