Black magic's main use is to hurt others that the sorcerer deems unworthy, inhuman, and in need of pain through psychic visualisation and realisation of Universal law and movement along with group incantation.
It can found to be used without incantation. Incantation was a form used by people in group settings so that magic could multiply among its users.
When one uses black magic the pain brought back to the caster of the spell uses inflicts damage that is twice as worse upon themselves.
This is why a dark wizard must be a very very very cold hearted bastard and not care about anyone or anything around them, even their own life.
2) A fancy brand of chocolate
3) A brand of "smokeable incense", along with "Spice", "K2", or "Happy Hour". These blends are now illegal in most civilized places.
4) old school Slayer song
5) great sex with a handsome black man
2) I got my girlfriend a box of Black Magic, she better give me some later.
3) One hit of that black magic and I feel very weird
4) Slayer played their song "Black Magic" and the crowd went apeshit
5) While most white boys were okay in bed, the only thing that could truly satasfy Katie was some of Shemar's black magic