Interesting. Just a few comments, I'd like to make. First, I take it the perfect ink whether used or not will vanish when they die/return to hell. That in itself could be a lever for another deal. Second, I think that one of these critters would make an excellent hell's attorney type of a character. Third, it seems odd to me that the souls of the dead children (and Mephistori) are somehow in the devil's bodies. Does that mean that the devils wanted to return to their respective families? Like I said interesting. I have a use for this.