Note that I don't know Hungarian, even though I obviously listen to The Moon and the Nightspirit.
Anyway, wikipedia claims that it means 'I conjure magic', but using a dictionary I don't get the same result. I can't find regő, but I have found rejtem. My dictionary claims it can mean either 'I hide' or '(self)hidden'. I don't get either result if I look up 'conjure' or 'magic'.
So what does this phrase actually mean? And yes, I have thought about learning Hungarian, but I haven't had much luck with learning languages in the past, because I never use them. And I'm fairly certain that I'll never make use of Hungarian. I don't even use what little Spanish I know.