Rune-Craftsman
So, the five origin runes are at the center of the first ring. We already know that when forming any inscriptions or runes, they have to replicate the pattern of mana movements in the atmosphere. Each layer of runes represents a new ring, and the strength of the spell is reciprocal to that of the ring.
But each of these inscriptions or runes has to start from somewhere, which is the center. Until this day, every spell that has been cast has one of these origin runes in the center of its first ring, indicating that these spells have a common pattern at the start.
The five origin inscriptions are as follows: a wavy line, a half arc with a horizontal line going through the center, a circle with a point in between with a small line connecting both the outlines, and a triangle with a square in it that touches all the walls by its corners from the inside.
[Half hour later.]