How do you farm RoW?

I've just gotten RoW for the first time, I have a vague idea of what I can do to farm but I was wondering if there is advice on stuff to do? Best places to farm, what to do to attract enemies, etc. Also, is it definitely worth it to put all my SoU into the ring? I have 2 RoW, one is +1 and I have 6 SoU. I'm a warden