Struggling to put this power simply

I have an oc with the power that they can sort of control their aura. Basically you know how someone intimidating has an “aura of fear” well this guy can do that but with any emotion and as strong as he wants (example he can make anyone in his presence feel any emotion to any degree so he could make an entire army run away in fear) but I’m struggling to find a way to explain this power properly in less words because whenever I try to explain it to someone they don’t understand exactly what I mean unless I go into detail. Is there any way to cover all the aspects of this power in just a sentence?