[@Jasper19]

Blood manipulation. At an intermediate level you can control a few enemies, like control their bodies (more advanced enemies will have defenses against this). Basically while they are still themselves and protesting you are controlling their bodies and making them attack their comrades. You can also weaken enemies physically, maybe put them to sleep or momentarily sap their strength. With enough focus you can makes someone bleed to death from their orifices or make their brain explode but it takes time and concentration. Basically just think about blood manipulation, what that means, and what kind of things you can do with it.