This. We can't really give advice without knowing anything about the element or team you're running. We can only give universal advice, like "Get Herc Axe, it's preddy goood"Yup, also this.
Notice that you see basically everyone run Yukimura in raids. That isn't ACTUALLY Yukimura, it's Shingen with the Energy Release reskin. The reason why veterans run Shingen with Yukimura's skin is because her Double and Triple attack animations are instant, like SR Beelz's. This makes Yukimura's skin save you like half a second per round. Whoooo, min/maxing!