Transhumanism for fun and power is the one thing Infernals are much better at than Solars (That and minions, at least in Exalted).
I wouldn't miss out on that.
I'm just saying that relativly free-form mages have a lot of options to negate environmental damage.
And natural Shapeshifters also have an advantage in that area.
And this particular shapeshifter with mage-powers from the people he's eaten is also tough enough not to be distracted by the pain of any initial effect we might get from an ambush.
From the Quotes that @uju32 just helpfully provided it looks like the most effective attacks against it were Lara's straight physical attacks like kicking it through some walls and Joseph's shapeshifted physical attacks.
It's good enough at magic to deflect or weaken everything Dresden can do and Dresden does have a considerable amout of raw power behind his mojo.
So getting it in a place where it can't easily get away and putting ours and Micheal's swords in it seems like the relativly best option, though I would want some more Charms for that to be honest.
We have different understandings on the limitations of what canbe achieved with biology-based shape-shifting. For example, as long as it is hydrocarbon based (and even if it is silicon based), chlorine gas would work. Some of the fancier stuff probably won't, but there's purity and efficiency in the basic chemistry. I am almost certain that it would be able to protect itself, but that would take active continuous magical effort, not be a basic function of its shape-shifting.Semi-divine immortal spirit of sadism and terror. Which part suggests that it needs to breathe?
Or that it cant simply shapeshift into biology that ignores or mitigates chemical weapons? Or even just tank the damage the way it tanked a full Uzi mag at contact range then continued to lolstomp the rest of the household?
Granted, Dresden almost strangled it with a soulfire infused magical garrotte, but that wasnt an air thing.
That was a magic thing.
Which is why I am also suggesting hard gamma radiation. It has two advantages - it's undetectable to biological senses, until the damage accumulated is enough to be absolutely and quickly lethal, it works as pretty much a mundane version of concentrated entropy attack, meaning that it shouldn't care about biology at all.
Ideally, we'd combine multiple vectors of attack while ambushing it. Radiation, chemical warfare, explosives, exotics (microwave radiation generators shouldn't be hard to build, and they should count as environmental hazard - we could cook it relatively easily). All toppled with a shintai using Molly going in with nuclear hellfire sword to keep it from being able to counter mundane damage.
What we need is to be able to prevent it from running away.
Suffice to say, I disagree here. Even assuming Winter has deep lore (arguable to say the least, Yomi Wan is not their area of responsibility, they are a west based power, etc), and that our book is merely a primer (again, arguable, from my understanding it turned out to be much more than that), a book one can give to mortals or near mortals without causing SAN damage is very useful and valuable to anyone who has mortal or near mortal agents. And winter does.This Mab is younger than Nicodemus. She is explicitly not the first Winter Queen. And Mother Winter has been around since the beginning. The Winter Court(and the Summer Court) as institutions are much older than Mab is, and has shared responsibility for the Outer Gates for millenia according to Word of Jim.
You underestimate their institutional memory.
To use your analogy, we are writing a sanitized primer to China or Russia's internal socioplolitics.
Which is a place where the CIA and State Department has been operating for almost a century now.
Winter will have the deep lore. Including those parts we couldnt write so as not to drive mortals mad.
While alive. The book is "get out of hell cheaper" card for a lot of magic users, Ivy included.Eh. Ivy has the mojo to simultaneously stomp a third of the Denarians as long as she has access to power.
Wan Kuei are frankly beneath her.
Even the actual Yomi Kings would step carefully around her.