Human sacrifice is powerful magick. The ritual death of an individual does two things: it releases energy (which can be directed, or stored – for example in a crystal) and it draws down dark forces or ‘entities’. Such forces may then be used, by directing them toward a specific goal, or they may be allowed to disperse over the Earth in a natural way, such dispersal altering what is sometimes known as the ‘astral shell’ around the Earth. This alteration, by the nature of sacrifice, is disruptive – that it, it tends toward Chaos. This is simply another way of saying that human sacrifice furthers the work of Satan.