The Flesh Element is the passive magick of Darkness. It was claimed by Darkness after The First Heavenly War, and was used to masqurade as Uranus by the God of Fear... ironically no one could tell the difference. It is the base element for anything living with a physical body.
Its polar opposite is Earth, but both Flesh and Earth is considered as organic, making them both parent of the Organic Element. Flesh is everything on a body, from bone marrow to skin, and with it, you could change anything you wish of yourself.