My favourite subjects - Dark Arts

Black magic or dark magic is the branch of magic that is used to perform evil acts or that draws on malevolent powers. In the Inquisition, Christians were afraid of witches and warlocks practicing evil black magic.

In the Inquisition, Christians were afraid of witches and warlocks practicing evil black magic. In modern times, witches and warlocks will use the term to describe the bad magic that they do not do in contrast with the good white magic that they do practice. Black magic would be invoked to kill, injure, or cause destruction, or for personal gain without regard to harmful consequences to others. As a term, "black magic" is normally used to describe a form of ritual that some group or person does not approve of. Not everything that is called black magic truly has malevolent intentions behind it.

Separate but Equal: Black and white magic are exactly the same thing, differentiated only by their end goals and intent. According to this theory, the same spell could be either white or black; its nature is determined by the end result of the spell.