So you guys all know the exotic Hunter helmet Skyburner's Annex, right? Well, it's description reads: "To die in a strange land: first by Oryx's hands, then by yours." Start up Outbound Signal and play till the very end. Who's the Ultra at the end? Vro'ourn, Hand of Oryx. Notice his helmet? Yup, it's Skyburner's Annex. Basically, the cool glowing thing you're putting on your head is literally the decapitated head of Vro'ourn. He was taken by Oryx (died by Oryx's hands), then he was killed by you. And yes, he is a Skyburner Cabal.