Board Thread:Episode Discussions/@comment-3125844-20140404171639/@comment-3125844-20140501170220

Maybe once a Hexenbiest does the rituals to get her powers back she has a way to use the blood of a Grimm against the Grimm

And although it sounded like Viktor was referring to Nick, it would also make sense he actually was talking about Renard since that's who Adalind is mad at