Dark Magic

Dark magic is a corruption of Pure energy that has evolved its own set of traits and powers.

Description
Some time after the creation of Pure energy, a portion of the Magical Dimension was corrupted. This corruption caused it to be forced out of the Magical Dimension and into the physical world. It normally exists completely undetectable by physical beings, until summoned by a Dark Magician. Dark magic is incompatible with Pure energy. Under normal circumstances the Pure energy will force the Dark magic back into its original inert state.

In addition to its physical presence, Dark magic allows the user to tap into the spiritual realm, something that is impossible to accomplish with Pure energy. It also allows the manipulation of life essence.