Blood magic is a form of magic that uses the life force contained in blood to perform spells or rituals. Practitioners believe that blood holds powerful energy, which can be harnessed to influence events, heal, or even summon entities. This practice is often associated with various cultures and mythologies, where it may be seen as both a sacred and dangerous art. In many traditions, blood magic is linked to themes of sacrifice and power. It can involve the use of one's own blood or that of animals, and is sometimes depicted in literature and media, such as in fantasy novels or role-playing games. Ethical concerns often arise due to the implications of using blood in rituals.