Black Magic or Kala Jadu can be used to give harm to another person who is not even nearby. It simply means you can put an impact on the other person who is at a distant place. Believe it or not but the impact of this technique can be experienced from hundreds of miles away.
black magic has traditionally referred to the use of supernatural powers or magic for evil and selfish purposes.  Kala Jadu Specialist  With respect to the left-hand path and right-hand path dichotomy, black magic is the malicious.