white witch 
noun
A person who practises magic for altruistic purposes.Basically, I live minutes away from the shop run by one Kerry Kulkens, a self-styled white witch and ‘Australia's leading psychic astrologer.’...
- The country's National Witches Association claims it discriminates against white witches and should only apply to black magic.
- She hosted the get together with partner Tom Dimakopoulos, at their shop Charmed, to teach aspirant white witches how to develop their magic skills.