Board Thread:Warhammer 40k General Discussion/@comment-88.114.255.138-20130111160957/@comment-5880884-20130128123248

I would say orks strengthen both. Ork's faith strengthen their god, but their emotions and violence strengthen chaos. It is similar for imperium and eldar, which is why the eldar try not to have pleasure and follow stict aspect paths to prevent slaanesh from gaining more power, while their collective psychic energy feed the eldar god of the dead.