"She will, for one.
I really can't say. I had only just found out these existed when you made me stop studying it. My guess is no, the passengers die when the person triggers and that sounds like it's just one to a brain."

As long as she sticks to her constraints about fully informed consenting patients, that's all okay.

Promise puts more pictures of fairies on the Internet. The Internet is so relaxing; she isn't mashing anyone's freedom into a smooth workable paste or conquering anything or uncovering any conspiracies or fighting any supervillains...

Beloved Internet. She must show it to Arcane at some point. Although he probably won't like it quite as much as she does.

She tells the Internet what she can about its curiosities. Does anybody want a spare animate pegasus skeleton, they are kind of cluttering up Hawthorn, one accumulates weird debris with Tinkers. For that matter, the Tinkers like to be busy, if anybody can think of cunning applications for their talents. (String Theory might after all just unproblematically pull off the entire Scion-destruction thing and then everything else will hum along as normal.)

She asks Cauldron whether, if Bonesaw figures out in more detail the answers to her questions (or does Cauldron just happen to already know?), whether killing Noelle's power would alert Scion to shenanigans.

Animate pegasus skeleton? She's got more takers than spare skeletons.

She gets warned that, if she didn't already know, many tinkers like to fight directly just like other capes do. Their devices even tend to work better then, no one knows why. But she does also get suggestions, from finishing Sphere's old moon colony to hyperspatially connecting all libraries.

Cauldron knows some of the answers. The passengers can connect to multiple parahumans, and Noelle in particular is sharing one with a solo villain, a Las Vegas Ward, and an imprisoned case fifty-three. Others are dead. They know this only because her power came from a Cauldron vial, and they can keep track of who else drank that formula.

If the passenger were to be destroyed, Scion wouldn't know about it. He may or may not be watching the passengers that he put there, but this one came from his counterpart.
Killing it would do unpredictable things to the others who drank the same formula. Cauldron vials contain mixtures, connecting people to multiple passengers. (Noelle's was 80% a strain they call "Division," which tends to give duplication-type powers, and 20% "Balance," to prevent extreme physical changes and uncontrolled powers.) They suspect that what went wrong with her power was drinking a partial vial, and by bad luck getting only the volatile part.

Killing her passenger would leave the others with an incomplete mixture, though not in a dangerous way. It might mean that they have only whatever power they could get from "Balance," and a fifth of a dose at that. Weak powers, not the sort of thing most people would wish they didn't have but hardly superpowers either, and it would be likely to return the case fifty-three to his human state. They're in favor of trying it.

Well, that sounds like a risky experiment. Especially for the villain (how bad of a villain?) and the Ward who might prefer to keep their powers. Noelle's need for sparrowing is not unsustainable or accelerating; Promise doesn't want to go wreak havoc on random capes she's never met without their permission. She will however send them messages asking about it. Because she doesn't have enough to do already.

Promise double-checks that Bonesaw does not want to keep all of her pegasus skeletons - it turns out that she has named exactly two of them and could do without the rest - what do all these people on the internet want to do with pegasus skeletons, exactly?

It's weird that Tinker things work better when operated by Tinkers in combat. That's very weird. Anybody know why that might be?

And regardless: Mannequin, want to pick up your old project?

So it turns out being reminded of who he used to be is Mannequin's single least favorite thing. No he doesn't.

The combat thing is weird, but Cauldron did mention that the source of powers wanted the world at war. Capes who regularly fight getting better at their powers is usually put down to experience, but that doesn't quite fit with tinkers getting better at tinkering as well as fighting. The true answer, Cauldron guesses, is that it's the passengers rewarding the capes who play along.

The main use of the varyingly visible skeletal pegasi is to have a varyingly visible skeletal pegasus. Who doesn't want one of those?

The villain is the kind of villain who does more property damage than personal injury, playing for fun or profit not malice and following the rules. If caught when the Birdcage was still in use, he wouldn't have been sent there. He mostly has a defensive power. The Ward is very attached to his shapeshifting and duplication powers, and doesn't want it messed with.

Mannequin does not have to participate. Would anyone else like to colonize the moon?

Promise needs some way to distinguish between would-be pegasus recipients. If nobody can think of anything actually useful to do with them, they can be auctioned off. Bonesaw does not have all that many opportunities to go shopping with her proceeds, but if she doesn't have to go through Promise's accounts to order supplies that's all to the good.

Promise notifies Noelle that she is sharing her passenger and some of the other persons with whom she is sharing it do not want it dead.

Various types of power armor are considered common tinker gear; quite a few can alter those into advanced space suits. (Promise herself already has a more traditional space suit from Cauldron, atypical only in accommodating wings.) Making a permanent colony is harder, with tinker tech's tendency to break and the stakes if it does, nobody wants to rely on everybody else's work. And few of them have directly applicable specialties. That's not to say no one volunteers, but it won't be fast work.

Noelle is unhappy about this bit of news about her passenger. Not so much so that she wants to hunt them down and arrange to no longer be sharing her passenger, but she's likely to make questionable decisions if she's stuck with this power forever. To everyone's surprise, asking Bonesaw to directly excise the misbehaving part of her brain actually works, with no ill effects. And then she's out of the headspace that would lead one to ask a supervillain for brain surgery, when her literal headspace is her own once again.

...Would Bonesaw like to replicate this effect for the other Case 53s for whom sparrowing did not solve the problem? Those of them with operable brains.

The moon colony can be slow. Dragon can help integrating everything. Dragon has lots of spare attention now.

How's String Theory doing?

Bonesaw is pretty much in full generality in favor of doing brain surgery on people, even with Promise's silly rules about consent and putting everything back where it came from. And any brain is operable if you try hard enough.
When she tries this, the physical changes do not magically reverse themselves. Being in a position with, for instance, skin made of scales, and no power to make that normal, is awfully uncomfortable. But between corona pollentia removal and sorcery they can be turned back into non-parahuman humans.

String Theory is much calmer than she was the last time Promise saw her tinkering, despite the larger scale and definitely fatal nature of a backfire. "Most of the way done already, and that's with taking my time. You're going to put the gate right below this, right?" The device is the approximate shape of an Apollo moon lander, but more heavily armed. "It'll stay stable while falling, more than long enough to do its thing."

"Ah. Nothing to worry about then.
It's not going to be leaving any fields if it's time-stopped, but I can set your gadget below mine and make it switch off when it's in freefall."

"Nothing to it. Always wanted to build an honest-to-Scion doomsday weapon."

A few days later she'll come by Hawthorn complaining of being done early. It's set up to freeze the timer with seconds on the clock, which can and should happen while no one is there, but that's not going to happen for days. (One day, twelve hours, thirty-five minutes.) She's moved her equipment off the expendable world and is now once again completely prohibited from destroying planets.