The Thousand Sons chapter has intrigued ever so much. At late fall 2013 I eventually started to gather an army around Ahriman. It’s a simple 2500 points army with Ahriman, a lord on Tzeentch disc, 2 units of Mutilators, 2 units of  Devastators, one unit of Chaos Spawns, a unit of Terminators and 2 big units of Thousand Sons marines. Oh … and a single Defiler. I’m not a big fan of the GW output regards to Thousand Sons and thus the army is a mix-match of beans from various sources.