these are also strongly linked the archetype of a lucky horse shoe and of four leaf clovers.
While it should work the same for everyone.
I wonder with these types of things firmly rooted in culture, if there may be times that it conflicts with other ‘culture magic’
Here is something interesting.
within the layers or bandwidths of uhh ‘physical space’ there are shared reality spaces where the people all believe in the same things. I mean like a country or town or village, (a hamlet may be too small lol)
which grants a solid reinforced effect of those beliefs within the culture.
a thing to consider is that a hamsa (not the field made one) would be more effective in the area and people it was originally created in.
Since it exists within the culture as a shared part of their reality.