Let the Mage first be expert in raising and directing energy.
Let him then select his victim.
The Mage shall then enflame himself, and differentiate the energy into a fertile bundle of decay. The image should be of swamp water, rotting food, and thick decaying vegetation.
Let him touch his victim and discharge this essence into the victim, directing it to the heart.
This spell may be reversed by drawing diseased energy from the victim, and immediately undifferentiating it for absorption by the Mage.