I have a Lord of the Rings movie sword that is Frodo's "Sting." Supposedly it glows blue if Orcs are around. I have never seen it glow blue. But I've never been to New Zealand either, LOL. I used to have the sword of Gandalf, but ended up selling it a few years back.
I have a woman who lives down the street and I'm pretty sure she's an Orc. Would love to confirm your sword will actually glow blue. Should be easy. She's constantly sitting in her open garage chain smoking. If you walk up to her with the sword and don't get shot in the process I will buy you a case of beer.