Of witchcraft was real, should it be legal?

[Agonized-Statism]

It would depend on the extent of its power. Regardless, I could see something like Marvel Comics' Mutant and Superhuman Registration Acts passing and lots of bigotry directed toward practitioners. The revelation that supernatural phenomena is real would spark a religious revival, both for traditional faiths and NRMs.

Not sure this belongs on the US general discussion board btw, because this isn't exactly a pressing issue in current politics.

[Agonized-Statism]

So many people in this thread belong in padded cells. I don't even know where to start.

Oh no, people are entertaining a hypothetical scenario, better post an ad hominem

[Agonized-Statism]

This brings up an interesting hypothetical. If the Christian God were proven real, should prayer be legal?

Is there a functional difference between praying for someone' death and casting a spell so that they die?

Mormonism's Joseph Smith actually explored questions like this in his theoretical post-Second Coming theodemocracy, which came up in his 1844 presidential campaign. The Christian God was to be the ultimate power and would give law to the people which they would be free to accept or reject- which is kind of stupid considering that the Christian God is described as omnipotent and all-powerful and had a tendency to smite people for defying that will in the past. He assumed that non-believers would continue to exist and participate in this not-Kingdom of God after Armageddon...which...what?