Quote Originally Posted by Akiza View Post
The only true Gods revealed Gods so far are Hydaelyn, Zodiark and the Twelve which were created by Hyadelyn.
The Twelve are primals. At the end of 1.0 people are told to pray to the 12 to save Eorzea, then the mega aether staff is used to manifest those prayers in order to trap Bahamut but it fails. Prayer + Aether = Primal.

The result of this is Luisiox (spell check please) then using those same prayers for the realm to be reborn after the devastation it went through and the remaining aether from the failed summoning of the 12 in order to turn into Phoenix (the symbol for rebirth) to defeat Bahamut.