User blog comment:LegerPrime/Sting v Larcade/@comment-3285005-20161105042203/@comment-7418318-20161105232959

White or Black magic doesn't mean good and evil in Fairy Tail.

We've seen people use black magic for good and we've seen Phantom Lord members use light magic for evil and Sting use his White Dragon Slaying for purely selfish goals.

Even if it was Holy magic, that still does not make it good if it's used for bad things like killing innocents. It's the user and the kind of use he puts it to that decides whether it's good or evil.