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ok hai there :3
yeah i would think so, not any type specifically though.
on another note, generally magic(and things such as psi and chi as well) tends to either willpower or ritual based (possibly asking for power from some entity). now as for witchcraft there are many forms of it, everything from Wiccan based magic to devil worship and necromancy can technically be seen as witchcraft so the term is quite broad.

well i pretty much believe most types of magic are possible so i don’t think belief would be a good word to use. nevertheless magic as i already stated seems to come from 4 main sources, psi, chi, (whatever energy you want to associate with regular magic), and some non human entities.
mainly i would try to use either psi or general magic. the difference between them being the power of psi comes from the individual and magic comes from the world around someone. (thats how i would classify it at least).
personally i dont follow any specific type of magic doctrine such as chaos magic or Wiccan magic. i just look for an effect im trying to achieve then figure out the best way to accomplish it

well no items typically if thats what you mean
other than that its mainly willpower and focus