Hey, so over the years this has been a subject of rumors and tips how to get it, but I've never actually seen any real evidence anyone getting it, screenshots or videos. Perhaps my google-fu failed me, but here is a video of how to actually get the sword. And spoilers, yea, it was just an Arcane Sword. If this topic violates some site rules, feel free to delete it. Posting it here to have it internet archived in case I have to google it out in a decade again!