I'm having extreme difficulty protecting myself and family from a pagan 'elder' who has admitted to trying to destroy me. He was instrumental in the premature death of a family member by removing life support illegally for over 33 hours! My daughter is in counseling for the abuse she received from him. He practices Wiccan very heavily and is one scary dude. I know he has cast 'spells' on me, I can almost feel them. I feel that the 'evil' is very powerful around this dude!
Those involved in the Wiccan religion will be upset to see your note because they animately claim to only practice "good" witchcraft. Of course, God tells us that all witchcraft is evil (such as Deuteronomy 18:10-12), so there is no such thing as good witchcraft.
The one thing to keep in mind is that all witchcraft is based on lies, which is not surprising since Satan is the father of liars (John 8:44). Granted this man thinks it is real and puts on one very scary act, but horror movies are scary too and we know that they are just made up stories.
Treat this man as you would any other wicked person. Press charges for his illegal deeds. "For rulers are not a terror to good works, but to evil. Do you want to be unafraid of the authority? Do what is good, and you will have praise from the same. For he is God's minister to you for good. But if you do evil, be afraid; for he does not bear the sword in vain; for he is God's minister, an avenger to execute wrath on him who practices evil" (Romans 13:3-4). God put governments in place to protect the good and punish the evil, so use what God has provided. At a minimum, get a restraining order against the man. He might try to retaliate and do you harm, but be confident that he cannot harm you with mysterious power because such doesn't exist. Any attacks will be the same as any other evil person might attempt -- he will just try to make it look like witchcraft.
Read through the sermon, "Is Witchcraft Real?" and learn what God has to say about the matter.