Hello Jan...
As a brother i also want to warn you of this, though you may not believe...
As a christian you should have nothing to do with sorcery or witchraft. A christian finds his/her joy and pleasure in the things of God not in the things of the world... and if he/she does love the things of the world then the love of God is not in them...
Leviticus 20:6 - And the soul that turneth after such as have familiar spirits, and after wizards, to go a whoring after them, I will even set my face against that soul, and will cut him off from among his people.
For our souls to turn after witchraft and sorcery and take delight in books or movies that promote them is a grievous thing in the eyes of the Lord...
Such things are of the world and we are not to delight in (love) them... if we do it is a clear sign that the Love of God is not IN us... though we may think we do.
1 John 2:15 Love not the world, neither the things [that are] in the world. If any man love the world, the love of the Father is not in him. 16 For all that [is] in the world, the lust of the flesh, and the lust of the eyes, and the pride of life, is not of the Father, but is of the world.
We cannot love God and mammon Jesus taught us...
Both Harry Potter and the Chronicles of Narnia promote magic, witchraft and sorcery... In fact the Chronicles of Narnia is a basic handbook used to introduce the occult to beginner witches in real life.
I would STRONGLY suggest that you read this article:
https://amazingdiscoveries.org/S-deceptions-witchcraft-narnia-chronicles
May God open your eyes to the truth of the things i say...
A Christian does not delight Himself in the movies and books that have nothing to do with the Word of God or say things contrary to the Word of God...
Our delight is solely in the Word of God and the things of God and if we find ourselves delighting in the things of this world then we need to check up on whether we have not backslidden into the world...