Sounds like a boss I had once, who didn't have the power to just fire people but took extreme sadistic pleasure in not only setting his own staff against each other, but even better if you could dish dirt on others in "enemy" teams to get them in trouble. If you got caught in trouble for absolutely anything even if you weren't playing the pathetic games he wanted, he would simply deny any knowledge and leave you to squirm while someone else had a go at you. When he did lower himself to rescue someone from trouble, he would make sure they owed him big for it.
I refused to play, suffered minor depression, almost split up with my wife and contemplated suicide, until one day I just got up, walked into work and handed my notice after 2 years of it.
You're probably asking why did I stay all that time? I must have been stupid to put up with it. Well, I was brought up to work hard, never quit a job, if you do it's a sign of failure. I had my wife to look after, the mortgage to pay, you spend so much time worrying about the job you don't see clearly and you don't think there's any way out. I was lucky I had a moment of clarity before it was too late.
Scumbags like this are all around, look after yourself and look for the signs. I now have the attitude I should have had long ago, it's just a job. I do my job to the best of my ability and I plan what I am going to do with my free time when I'm not there. I never want to end up like that again.