When has it ever been white magic?
http://www.youtube.com/watch?v=2MBQkB1ZzP4
FF2: Simply says the ultimate magic sealed away by the ancients, but why would something do destructive be considered WHITE MAGIC?!
FF4: BLACK MAGIC
FF6: BLACK MAGIC
FF7: No real label made, but again it's deliberate, offensive magic - e.g. BLACK MAGIC
And it goes on.
The only offensive white magic spells have always been Holy & Dia in offline series. Not ONCE has it ever been shown clearly as "white" magic - nor would that even make any sort of sense.
So, how does your foot taste? If you're going to troll like this, at least learn your stuff. It was also available as an exclusive ability to Ramza in FFT but that wasn't really white magic either (don't think it counted as either technically, as it's considered a Squire ability skill unique to Ramza)