Use it for a while, once you clear up the easy stuff you will find that your electrodes get totally blackened by that Magical Black dust so aptly shown in Harry Potter.
Somewhere around that time you realize that there isn't enough current in the Verse to reverse that Blackness.. the more Blackness the more interest Voldemort has in keeping you out of the game..
This has all been discussed before but the good folks at CIAoogle have made sure it no longer exists.. and for those without memories it never did exist..