God made clear to His people that they were forbidden from having any contact with or participation in magic or in occult practices:
Deu 18:9 When thou art come into the land which the LORD thy God giveth thee, thou shalt not learn to do after the abominations of those nations.
10 There shall not be found among you any one that maketh his son or his daughter to pass through the fire, or that useth divination, or an observer of times, or an enchanter, or a witch,
11 Or a charmer, or a consulter with familiar spirits, or a wizard, or a necromancer.
12 For all that do these things are an abomination unto the LORD: and because of these abominations the LORD thy God doth drive them out from before thee.
13 Thou shalt be perfect with the LORD thy God.
14 For these nations, which thou shalt possess, hearkened unto observers of times, and unto diviners: but as for thee, the LORD thy God hath not suffered thee so to do.
Christians must understand that the Bible teaches that there is no such thing as a good fairy, witch, wizard, or any other supposedly good practitioner of supernatural arts involving magic or occult practices. All Christians, including especially Christians who immerse themselves in fictitious materials that are filled with such unbiblical notions, must diligently guard their minds so that they do not unwittingly espouse any such unbiblical views as legitimate.