The basis of magic in the world was runes.
There were as many runic languages as there were the different fields and studies of magic, which was rather close to infinite.
However, for all intents and purposes, there were more common runic languages and other obscure ones.
The higher one's Tier was, the greater the power of the runic language they could learn. A Tier 2 being could not learn Tier 3 runes. As such, they could not create spells that were of the same nature as Tier 3 spells.
It was due to a fundamental difference in nature.
Of course, there were anomalies— incredible, once in a lifetime geniuses that could bridge the gap between Tiers. But they were rather rare, even in the vast universe.
As Cain stared through his list of spells and magic-based skills, he realized that most of them were still grounded in the nature of lower Tiers.
