Earthen Aura

Earthen Aura is a type of aura that allows the user to draw energy/power from the earth and use it for defensive and offensive purposes.

Usage
This aura allows the user to draw energy/power from the earth and imbue it into different techniques and into themselves. Earthen Aura can be given to others in a way of empowering their attack more. This has been shown when Xavier (Bell) and Donny gave earthen aura to William Drake to create a massive and powerful finger gun.

Fighting Styles
The most common use of Earthen aura is to use it to power a Fighting Style. This is done in several ways, including drinking serums (Muscle Style), enhancing the features of a person (Heavenly Multitude), or even creating attacks (Finger Gun Style). Certain fighting styles require more mastery over earthen aura to be used, while some can be used with the littlest amount of mastery over this aura.

Enhancement
A more advanced technique is to enhance a person's body parts or weapons with earthen aura. This can be difficult to do as you need to put a certain amount of earthen aura into different types of materials and body parts to effective. If done incorrectly, body parts can be broken and objects can be shattered. In every material and body part there is a 'Speed' percentage and a 'Power' percentage and in-between is the sweet spot in which the earthen aura is most effective.