Harry Potter books and movies, lunchboxes, toys, stationery, games, - has done much damage in encouraging the acceptance of good magic and that witches and wizards, and spells and incantations are just fun and fantasy. It started much with Walt Disney and his cartoon movies promoting the portrayal of spells, witches, wizards, magical potions, elves and goblins, leprechauns. Disney have never ever made a Christian movie. Then came The Lord of The Rings and more wizards and magic. All these things appeal to the spiritual component of human beings that everybody has. BUT never ever do they lead to the truth and to the true worship of Jesus; our Creator, our Lord and God, our Saviour.
And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God. Romans 12:2 KJV
Do not conform yourselves to the standards of this world, but let God transform you inwardly by a complete change of your mind. Then you will be able to know the will of God---what is good and is pleasing to him and is perfect. Romans 12:2 GNB
Put on the whole armour of God, that ye may be able to stand against the wiles of the devil. For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places. Ephesians 6: 11-12
He that committeth sin is of the devil; for the devil sinneth from the beginning. For this purpose the Son of God was manifested, that he might destroy the works of the devil. 1John 3:8
When we are born again by baptism of water and the Holy Spirit we are translated (moved from one place to another like in Star Trek) from the kingdom of Darkness (false religion, idolatry, evolution, philosophy, Earth worship, Wicca, magic, dragons, Vampires, Gothic culture, occult, astrology, it's a long list) to the Kingdom of Light (truth in Jesus himself and the Word) > Children of God > Children of Light > testimonies to transformed lives for the better > Jesus.