Pretty sure the +4 is just supposed to be the situational bonus for looking exactly the same. I dunno how I'd feel about a ritual that duplicated appearance perfectly without that sort of bonus.
Fate...doesn't so much have situational bonuses per se. It's the bonus provided by
that method of looking the same. I'd interpret it as including, via the same sympathetic magic as assuming their likeness, perfect vocal duplication and probably body language as well, while other methods might lack those. Corpsetaker's certainly lacks the body language duplication, for example.
A ritual is better than a single use of Glamours. The point of Glamours is that you can use it freely.
True! You can use Mimic Form freely without a big ritual too. It requires a piece of them, sure, but it doesn't require additional time, effort, or rolls beyond that.
Claws, incidentally, is really only useful for when you're not prepared for a fight or bad at Weapons. In both of those cases conjuring (or buying) a sword doesn't work.
Brass knuckles would in the second case, and are almost as good (Weapon 1 vs. Weapon 2). The first case....well yeah, same thing as Glamour above. That's the usual downside of Thaumaturgy. That it requires prep.
Except that's not how you defined the effect. If that's the effect you want, use a different shift calculation. And pay for the duration, because permanency is definitely an advantage.
My point isn't necessarily that that's how you build the spell (which would indeed involve duration), it's a note that a switch like this is really no better than that spell...and thus shouldn't be that many more shifts.
Actually, lemme quote the book:
I take this to mean that you actually have to bypass all levels of consequence. Not just the levels of consequence that the victim has available.
It could be interpreted differently, but I don't think it should be. These spells are supposed to be a big deal. They shouldn't be easy.
That's a
really iffy interpretation that I disagree with completely. Killing someone who's almost dead is easier than someone completely healthy, and there's no reason doing it with Thaumaturgy would change that.
But it almost doesn't matter for purposes of Corpsetaker, since what she does is via Thaumaturgy-as-Evocation, which can surely kill or transform in a more normal combat sense via multiple attacks or the whole point of using it as Evocation is lost and fails to make sense.
What?
Harry goes on and on about how difficult and dangerous it is to make yourself stronger temporarily. Why would making yourself stronger permanently be easier?
Not...per se. He talks about the difficulties of various methods, which isn't quite the same thing.