Board Thread:Off Topic/@comment-26397825-20160528034745/@comment-27450328-20160601133935

Alright, so the main problem here is that the third tier seems too different that the others. Well, in contrary of what Vedran have said, this power relies more on hypnosis than just implementing emotions (there is a small but important difference). The user's voice strengh allows him to speak directly to the subconscious like hypnosis, displaying fear or courage on a person's mind. That allows the target to forget pain and tireness or, on the contrary, to developp fear and reservations. Those are basic hypnosis moves, like when you make someone forget their fear while thy hold a snake/tarantula (like seen on tv shows).

For the third one, it is only more evolved level of hypnosis, the voice powerful enough to go through the target's reservations and deliver not raw emotions but basic orders directly on the subconscious.

Now that it have been explained pseudo-scientificaly, I am not sure this power sill be very efficient toward Grimms, even the frightening one, considering they may lack an individual mind.