Scour the Cosmodrome for Skolas and the invading Wolves. Complete mission "The Ruling House."
"I spent a long time in the wilderness outside the Walls. I've mentioned it before. Red-marked House of Devils Fallen always tracking my movements.
The entire time I was out there, I think I saw one member of the House of Kings. Just sitting on a wall, scanning the horizon. Never even gave me a second glance."