Yes, I got that you were talking about evil powers. I was curious for an example of such as I don’t actually believe in any sort of magic actually existing.
Well, one example-- some pagans were chitchatting about how hard it was to be in the workplace after being “outed” as pagan, and how closeminded people were, and how they couldn’t accept them and leave them alone.
One girl who had dedicated herself to Nyx (or was it Hecate?) worked in a workplace where there was one really evangelical-type Christian who kept prosletyzing at her, and she was really annoyed by him. They were standing on the stairwell at work, and he was bothering her, and she prayed to Nyx to get rid of him for her and did a mental-imagery-magicky thing of pushing him away. (The conversation was a while ago; she explained it better than that.

) The next moment, he misstepped on a stair, and fell down about three flights of steps, and ended up breaking his leg in several places. The girl was quick to pray a thank-you to Nyx, but asked that she not be quite so violent in the future.

The responses to her story were mostly along the lines of, “What a jerk; he deserved it!” and “Yeah, Nyx, don’t mess with her.”
People have dedicated themselves to beings besides God for ages. I don’t have any problem in believing that there are entities out there who are happy to accept that dedication, and who perform favors in exchange. It’s totally not something I would ever, ever, ever want to get involved with myself-- but it makes sense to me that instead of being totally imaginary nonentities, that there are beings behind various occult labels. I also think that’s one of the reasons why the occult is so forbidden-- not because there’s imaginary unicorn dust and pink bubble fairies to distract us from God, but because there are beings out there that we really have no business involving ourselves with, no matter how innocently.