User blog comment:40kfan/A Community Project Idea - Part 2/@comment-24580172-20141203022810/@comment-24580172-20141203024253

No offense to Xaphrius, but a single Warband won't very much threaten the Amalgamate unless it was truly massive. So I would suggest some of the last as multiple warbands would make the Amalgamate fearful. The Artifact could be a prison of some old Daemon, an instrument of mass destruction, or ETC.