User blog comment:James12708/Reapers VS. Forerunners VS. Angels from Darksiders VS. Humanity from Halo VS. Council and humanity from Mass Effect VS. Imperium of Man/@comment-50.80.96.33-20130130074303/@comment-1683193-20130131020100

Also,the Catalyst is not in this and the Crucible wouldnt effect anyone in Shield Worlds.