I called that he would sell Plan C. It was a rare exotic that is actually going to be perfect for the Crota's End raid. It shreds the Knights' arc shields as if they don't exist. Bungie wants to make it easy for the casual so they give them the tools they will need to beat the raid. Now there is a 1.5 weeks to max it out. I was already going to have my Plan C equipped for the raid. Seeing Xur sell it now, I won't understand why anyone wouldn't.