Energy

General Info
Energy is the form of magical energy on Zanzus. It can be used to preform Incantations/Spells, infused into items, or to protect ones self (and only yourself, force fields are restricted to the Archangel/Light Elements). Elementals also heal faster when they have Energy; not "bullet wound is closed after 5 minutes" fast, but where it would take a human a few weeks or even months to recover from an intensive surgery, Elementals need 2 weeks at most (using Earth time measurements, not the Zanzus calendar.)

Incantations/Spells
By my definition, an incantation and a spell are different. Incantations do not require Energy, though for them to work with 100% certainty, the user must have some Energy left, or focus really hard. Spells have much less focus but take way more energy, and often have other individual requirements and are able to be used by a wider variety of Elementals, whereas Incantations, with the exception of Shifting, are usually exclusive to 1-3 Elements.

Shifting
Shifting is an incantation. The incantation is "I am free", as chosen by Stormbringer, who really enhanced the idea of Energy, thus granting her her title of it.