The shape of the elementals in this plane is weird but they are very strong. They are holding themselves very well against the demons. They lack physical prowess but they don't need it. Their energy manipulation is impeccable so their ability to craft spells is outstanding. Each Elemental is a cannon made for bombarding the enemy with spells. They might look chubby but that's only because they are full of power.
It is unfortunate that their enemies are demons. Demons have no weaknesses either physical, magical, or spiritual. Demons can't utilize all of the three but they have defenses and resistance for all three of them. The lack of weakness has helped Demons invade several planes and fight different types of races without a handicap. They are able to keep their strength no matter what type of special race they encounter. The elementals of this plane are just another race that might fall to the onslaught of the abyss.
Elementals don't have rigid bodies usually. Their physique is purely energy-based and it isn't humanoid. These elementals are spherical in shape and look very similar to the elements that they embody. Fire elementals look like giant balls of burning flame. Water elementals look like giant balls of raging water. Wind elementals look like tornadoes and earth elementals look mostly like spherical giant boulders.
Those four are the major types of elementals but they aren't the only types. There are also light and darkness elementals. They aren't in the shape of a sphere. They are like pillars of energy. These are rare to see but they are the strongest gods.
Aeternus smiled as he watched the army of demons clash with angels and gods. Armageddon is filled with so much death and violence. It brings him pleasure to watch. It is a matter of life and death for most demons, angels, and gods. But to him, the war is an entertaining process before he acquires victory.
"That's it. Fight and die. Show me the meaning of your life at the edge of violence."
He is further impressed with the performance of the gods. The entire pantheon of gods of this plane is strong. It is because the gods are actually useful to the mortals.
Serving a god in this pantheon can increase the elemental affinity of the believers that corresponds to the god. So having faith in the god of fire will improve the elemental affinity of fire. The same happens with all elemental gods. This is a boon that those without royal bloodlines will kill for.
Those with royal bloodlines have divine affinities so they don't need the help of elemental gods. But they also wouldn't serve gods even if they didn't have divine affinities. Their ancestry won't allow it. As for those without roral bloodlines, any method to increase their elemental affinity is a miracle. Hence the increase in faith in the gods of this plane and the power of the gods. It is why the gods are pushing the demons back.
"Show me the true worth of divinity. This will not be enough if this is all you have."
He is not worried or concerned that the gods are winning. They are killing demons quickly because of their high quality but they don't have the quantity to contend with the demon army. More demons swarm the battlefield no matter how much they are killed.
The gods are useful so they have a lot of believers. It has made them strong, but their usefulness also restrains them. Any god that isn't useful in this plane will not progress and grow stronger. The people only believe in gods that will actually help them. A god of archery or hunting cannot increase the archery or hunting skill of its believers. But a god of fire can increase the elemental affinity of fire and hence improve their speed of cultivation and power indirectly.
So a god of fire will be prioritized over a god of archery. This prevented other gods and other races from becoming Celestials. Only the elementals managed to become Celestials and no two Celestials can have the same domain so it limited the amount of Celestials that they have in the pantheon despite them being open and peaceful to each other.
There are 10 Celestials in total. One for fire, water, wind, earth, light, darkness, ice, Nature, metal, and lightning. They would have had more if the mortals of the plane were more accommodating. This situation resulted in the high quality but lacking quantity of the gods.
Aeternus knows a lot about this plane despite having not gained access to it yet because the tree father has an avatar here. The Tree Father was not accepted in their society. He can heal and increase the growth of plants but that isn't as useful as providing an increase in elemental affinity. Plus most gods can heal injuries and strong people don't care about the increase in good due to the increase in plant growth.
The inhabitants of the plane didn't go all out to eliminate the avatar but it wasn't welcomed. The people of the plane don't need the avatar just like they don't need any other gods apart from the elementals. The ones that need the avatar only want his parts after they have killed him.
The plane doesn't want the tree father and the Celestial of Nature and Plants also wants to absorb the tree father to grow stronger. The plane can be considered a bust to the tree father. It is not useful for anything so Legion decided to attack and pillage the divine plane. So Aeternus has a lot of information about the plane and could prepare well for the invasion.
The plane is resisting very well despite his informed plans. They have a lot of grand gods and the entire pantheon is completely united. If not for the fact that he brought other demon kings with him then he wouldn't have any chance of victory at all. After all, a single demon king surely can't handle 10 Celestials. That's just impossible.