[one of the greatest advantage of a spirit king is knowledge intrinsic to the universe itself. Basically it would get to a point where a spirit king is a bastion of knowledge and Wisdom, they know all and see all, such that even the gods themselves would come seek knowledge from them.
History has likened many spirit Kings as gods, but gods there are not. They are beings connected to the very foundations of existence, holding together the heavens and earth, defenders and protectors of the countless worlds and life that's spread across the cosmos.
And so when it is needed and required, the universe would not hide away it's knowledge, which is why Spirit Kings are so feared and respected, they posses the wisdom and Knowledge of the universe.]
CLASS DESCRIPTION FROM A TABLETOP BOARD GAME
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