Actually... I don't know what makes this one great, but I keep coming back to it. The beat is stylistically just right but not anything spectacular, the lyrics don't really make linear sense, the rhymes aren't especially dense and the flow isn't impressively fast. But it's a great song IMO.
So... I don't know, feel free to throw out your own ideas (or just tell me the song isn't any good, heh). The best I got is that it feels like it's making sense with a bunch of ideas that you realize are connected while listening ("off white" or "little stars" repeating), but it's also sufficiently illogical that it creates a sense of mystery that the listener wants to crack. The second line "I'm amazed by the stranger of your face" is really the perfect example of this, and then you go down the rabbit hole of wondering what does chainmail have with being impossible to catch, and if she's free from the chase why is she still running?