Okay, here's my take MAJOR SPOLER WARRING!! [spoiler]okay so I highly suggest reading the grimoure for the traveler in legends and the black garden first, okay so as we should know the traveler is our God, almost bringing us from the dead to fight "the darkness" but what if everything we know is a lie, but instead the ghosts have the power to control us, they can bring us from the dead and many other things, I believe they can also drug us into a dream state where everything around us is made to look like we are the heros, maybe the nine are what we are fighting, beings this powerful must have the ability to see through the traveler, and xur is here to warn us and the nine need our help, [/spoiler]