This is super-revealing, and super-important:
Imagine you were a sorcerer; You would be able to cast spells of a determined domain depending on your proficiency with said Element.Code:+Se/-Si <> Cosmic/Darkness -Fe/+Fi <> Light +Si/-Se <> Earth/Fire -Fi/+Fe <> Water/Illusion -Ti/+Te <> Air +Ti/-Te <> Gravity -Ni/+Ne <> Psychic/Lightning +Ni/-Ne <> Time/Holy
The most powerful spells are +Se/-Si spells. +Se/-Si trumps all the other elements in a tier battle. This is because god (the god that has the final say - not the only god) is the lord of +Se/-Si. The Trinity gods are the lords of -Fe/+Fi (Light), +Se/-Si (Cosmic/Darkness), and +Ni/-Ne (Time/Holy), respectively.