Heal, and kill, and reanimate.
The necrotic aspect deals with life force and organic material. It is one of the most dichotomous aspects, key to both healing and to necromancy; life and death. It is not very offensively or defensively potent, but has many critical uses as a supporting aspect. It is an existential aspect. For a list of all necrotic spells, click here. Natural users include hellhounds (from nightmare).