A Godly Experiment

I've always had this idea of what I'd do if I was suddenly a God, or at least something resembling that level of power.

See, I'd pick a situation that was widely witnessed, lots of people there, maybe broadcast in some way, just lots of witnesses. And then, a crucial moment, I'd have someone basically cast a magic spell, a magic missile from a pointed finger, something like that. And then I'd jump ahead a hundred years.

Would religions have risen? Would it be 'disproven'? Or, just maybe, now everyone can do it?

Everyone left not magic missiled, at least.