Though I believe there are negatives and positives, if one is seeking something negative..it could attract more negatives into a persons life...It's what I've referred to as "The law of attraction"...you attract what you dwell on....Just as negative people always seem to be in negative situations all the time...They start to feel the world is after them, making them miserable.......Though no Satan.... That is mainly derived from myth.
Wicca as far as I know are peaceful type people, though, anyone can attract the negatives forces to them.
The Law of Attraction teaches us that everything vibrates and every vibration affects all other vibrations. I like the way Abraham-Hicks put it: "Everything vibrates and is communicating, reacting, responding and integrating with other vibrating things."
Time only exists here on earth for us humans. Quantum physics teaches that although everything; every event, every experience, every possibility exists at the same time--in the NOW--man has invented time: the past, the present and the future, to bring some sort of order into these experiences. Religions call this Eternity--the place where time has no beginning and no end.