This really belongs in the lore forum, but...

Quote Originally Posted by Akiza View Post
...most still haven't bought into the lore reasons why we can't summon Primals or even the Twelve Gods of Eorzea to fight along wide us. Even in the lore it says Summoner's are Mages that can both Primals and bind their essence to our will. Square created a lore problem with the Egis anyways because it still takes more Aetheric Energy to create the Egi then it does to Summon the Primal.
Read the quest text. It doesn't take any aetheric energy to summon an egi, you've binded corrupted aether created by the Primal into an "egi", a vessel. "egi" is Allagan for "essence", and egis are not primals. The corruption was around before you came along, so no damage to the world is caused by you calling/dismissing it. You've just sealed the corruption, and are using it.

Quote Originally Posted by Akiza View Post
Because power can't disappear where did the power used in creating the Egi disappear to based on lore the Egis should be more powerful then the Original Primal. Also we should be able to augment the Primals power and summon a extremely powerful version of the primal as well as the Twelve Gods of Eorzea or any other magical beasts.
...wait what? Where does it even say a pale, small part of a Primal's aetheric corruption should be more powerful than the Primal itself? It doesn't say that anywhere.