In  Deadbeat Cowl tells Harry "Just as well, I have wanted to see for myself what has the Wardens so nervous about you." and is therefore a member of the Counsel, deals with the Wardens regularly (stationed in Edinburgh?) but is not himself a Warden.  However believes himself more than a match for someone who makes the Wardens nervous...

In chapter 31 we find out that the Council was attacked and the Sr Council is hold up... I believe members of that Sr Council can be eliminated from consideration as well as they would be missed while Cowl is active in Chicago.

From the Giant list doesn't that leave only...

 Simon Pietrovich
 Gregori Cristos
 Samuel Peabody
 Bluebeard
 Gomez (sleeping off a potion)
 Luciozzi (on sabbatical)
 Klaus Schneider
 Montjoy (research trip in the Yucatán)

These characters are not on the Council and would need to be further disguised to be considered:
 Justin DuMorne
 Heinrich Kemmler
 Etienne the Enchanter
 The Original Merlin


Okay that said, the only ones who truly deserve consideration are:
 Gregori Cristos
 Samuel Peabody
 Gomez (sleeping off a potion)
 Luciozzi (on sabbatical)
 Klaus Schneider
 Montjoy (research trip in the Yucatán)

From that list Gomez, Luciozzi, and Montjoy are effectively 'Other' or 'Unnamed character'...

Leaving Cristos or Peabody.

So it's Peabody? Disappointing, but there is it.  Wizard Peabody or an unmet character is Cowl.

Time Traveling or alternate universe Harry wouldn't even know to use the line about Wardens talking as a distraction though someone like Goodman Grey might be able to put something like that together as a red herring.

I was upset with Harry for not going over to Ivy when he saw her... I expected him to go back. Very disappointing...  there better be more in battlegrounds and I would have been happier if Ivy had waved off Dresden... ‘not here’ kind of a message... then at least we would know that more will come in battlegrounds and Harry would be confused... and who doesn’t like to see Harry suffer?

Molly used magic to impose her will over another person’s. That’s black magic.  It doesn’t matter what the change was, therefore it doesn’t matter what the intention of choosing that change was. I think it does (should?) matter what Molly intended to do (in this case impose her will on another directly with magic), just not what she intended the outcome to be (help them).

If I intended to shoot you but wanted to hit your leg and slow you down I still intended to shoot you and if I hit your fimeral  artery and kill you that’s murder.

If I try to take your picture and have no idea that the camera has been modified to shoot bullets not take pictures and shoot you in the head... not murder.

If I give you my blanket to keep you warm and help you survive the winter and have no way of knowing that it will give you smallpox... not murder...

Jim’s statements on these were fairly vague, I would love to get some more explicit commentary from him on them, but for now my interpretations stand.  Your intended outcomes don’t matter, but what you intended to DO does.

I think it’s important to distinguish between violations of the law as written/enforced and black magic.

Killing a mortal with magic is a violation of the first law.  Not because the wardens care if you kill people... but because you can’t do anything with magic that you don’t truly believe.  Believing that that person should die so I can have a nicer car does something to you... what is something Jim is still exploring but at the very least it makes it easier to justify the next murder... the law exists to stop that deterioration.

Killing in Self defense doesn’t violate the first law because believing that someone else doesn’t have the right to kill you for their personal gain doesn’t do the damage to your soul that believing you have the right to kill them for your personal gain does...  I seriously doubt the wardens care where you violate the laws, if you kidnap someone, drag them to Hadies vault, use magic to harvest there life force to make a new shinny toy and they find out about it... I think they will come for a visit.

Do Harry’s various actions constitute black magic (of the corrupt your soul variety) no, I don’t think they do. Has he violated the first law? Yes... isn’t there a WoJ about Harry violating all the laws before the series is done?

The laws are trying to outline black magic, but there are times they carve out too much space and times they don’t carve enough... I expect Harry to violate the laws without using black magic and others to use black magic without violating laws...