Life Essence

Life Essences are artificial, non-corporeal beings comparable to a human soul. Life Essences cannot survive without possessing a host body or being contained in an Essence Bearer. However, these essences are toxic and will eventually kill the host's soul if they stay too long. Once possessing a body, the essence will gain access to all the powers possessed by their host, if they can control them.

The only way a Life Essence can leave a body is if the host's body dies. However, they can also be extracted through certain spells.

History
In 2001, a Life Essence named Terra escaped her creator Kierkan and desired freedom. She eventually possessed Piper Halliwell, though she was later expelled and destroyed without a host body to survive.

The Source of All Evil is the most well-known life essence. It has inhabited a number of hosts, and was ultimately destroyed by the original Charmed Ones.

Known Essence's

 * Source of All Evil (destroyed: banished to the Demonic Wasteland)
 * Darkness
 * Terra (destroyed)

To Expel a Life Essence
(Power of Three Spell)
 * Host soul, reject this poison essence,
 * Let love's light end this cruel possession.