A Horcrux is a very powerful object in which a Dark wizard или witch has hidden a fragment of his или her soul for the purpose of attaining immortality.[1] Creating a single horcrux allows one to gain the ability to resurrect themselves if their body is destroyed, however creating multiple horcruxes allows them to gain near immortality. Creating multiple Horcruxes is suggested to be costly to the creator, by both diminishing their humanity and even physically disfiguring them.
Creating a Horcrux is considered the foulest act of Dark magic, as it violates laws of nature and morality by requiring the creator to commit murder.