Soul Drive

Soul Drives, or more commenly called Drives, are an ability featured prominetly in DxD/alter: Black Grimoire.

They are wielded by various wielders throughout the story, the first shown being Alexander Locke Crowley.

Summary
Soul Drives have existed for a long time, and have almost always been available for any being with a soul.

Drives can be awakened at birth, usually resulting in an easier controlled Drive with simple abilites. They can also be awakened, usually resulting with harder control and more complex abilites.

These are grouped as Birth and Awakened Drives.

Overview
A Drive is a culmanation of a person's power, coming from their soul and influenced by their mentality and personality.

No two Drives are similar, same as with people. They can have the same base ability, but function the same way. As the Drive is connected to the person's being- their soul as well as their mind, a Drive can be affected by a person's mental state and are ever evolving. The use of a Drive consumes the magic energy around the user. When there is not enough of the element, a portion of the user’s soul is consumed.

Each Drive has a unique Name and ability, differing to person to person.

Trivia

 * The concept of Soul Drives is based on the Drive's of Blazblue.