Bugsniffer: Agh, you're too cruel. I'm being peaceful to you, while you're being nothing but spiteful towards me.
Yes Danzo, its a good method but only a temporary one. The affected vampires eventually recover their powers. They lose their super speed, but keep their super strength, healing and worst of all, resistance to sunlight. This just makes it so they can't outspeed us anymore.
*Once he says that, Bugsy injects a purplish liquid into Nova, this time to serve a different purpose. It puts the woman under a trance so she is now easily hypnotized and will submit to the slayer's will*
Bugsniffer: Nova, listen carefully, when Nevermore gets here, you will help us in slaying him. You are now one of the Slayers.
*The liquid takes effect immediately and she cannot help but listen to Bugsy's orders*