Delphinus made themselves fucking obvious doing it too. Catching a fucking vessel? How much more blatant could those morons have gotten? Hydracula and Orion know how to make sure shit like that can't be traced to them at all. Like you said, some teams have cloaks of dorm stone. As far as King or any Judge would know, there wouldn't be a single blank around.
And anyway, I don't think Vulpecula or Orion have it in the first place. If they do, they haven't said shit to me, and they would have. We've been on good terms with Orion for a while now, and Vulpecula are my goddamn partners.
More importantly, what makes you think they'd even know how to take a Judge out with their keystone? Have you heard anything about that?