Aiolos creates creatures of blackish red flames within his shadow over time. Depending on the size, physique, form, complexity, etc. of the creature he creates, it can take anywhere between less than a minute up to multiple days to create. While the creatures are primarily made of flames, they do have a sort of solid, clay-like mass that serves as the basis of their shape. Once a creature has been made, it resides in Aiolos’ shadow until he deploys it. They can only emerge from Aiolos’ shadow or any shadow his shadow touches. These creatures are an extension of Aiolos’ will and his soul; as such, they cannot harm him and will follow his orders without question, whether it be to slay his enemies or simply act as a campfire. The power of the creatures Aiolos creates heavily depends on the before-mentioned factors - that is to say the size, physique, and so on - and by extension the amount of time he puts into them. For example, if he were to spend a minute to create something like a mouse, it would not have much power, although touching it would certainly sting. However, if he were to create a wolf-like being, it would have extremely high mobility and would easily be able to overpower an enemy. The amount of time it takes to create a creature decreases when he levels up. When Aiolos calls back a creature, it must physically touch his shadow to return to it.
While this birth magi is powerful, it comes with limitations. For one, there’s a limit to how much mass he can create and maintain at a time, which increases as he levels up. This limit starts at 1kg at level 1, grows to 5kg at level 2, then 10kg at level 3, and afterwards the limit increases by 10kg per level. Additionally, his mastery of his birth magi is dependent on his level; that is to say that he can only create simplistic creatures at lower levels. As his level increases, however, so will his ability to use his birth magi, and as such he’ll be able to create stronger beasts the higher his level is.