Is this even possible? I’m still a bit confused about how servitors can do “whatever they are programmed to do”. If yes, how could it work? Would it put people in a bad mood? Remind them of some previous emotional wound so they act on it?
If you created a servitor to “sow discord” then it will use whatever method it finds suitable.
When creating a servitor for such a task, you don’t want to be too specific and try to dictate a course of action, but rather let the servitor fulfil its task however it sees fit to. It’s enough just to tell it to cause discord between a group of people instead of how to do it.