I'm standing thirty feet away, on the second-ring walkway, with Kaelren beside me and the battle roaring around us. From here, I can see the whole thing. Thalia's hands on the wall. The light pouring from her marks into the wood. The exact moment the fracture freezes and the crack stops growing.
And I can see what she's actually doing.
She's not healing the wall. She's anchoring it. Pinning it to a fixed point in the Rootline so the living wood can't shift, can't buckle, can't respond to the Cathedral's pressure by bending further. She locks it in place, and then the wood heals around the anchor point, closing the crack because the material has been given a stable foundation to grow from.
The Cathedral's constructs hit the repaired section and bounce. The wall holds. The defenders move back into position. Thalia lifts her hands from the wood and stands, breathing hard, her marks dimming from blazing to steady.
She did it in twelve seconds.
I feel the thought forming before I have words for it. It starts in my gut, a physical sensation, the way you feel a sneeze building before it arrives. Something clicking into place. Gears catching. The first tumbler of a lock turning.
The Cathedral can't be destroyed while it's shifting. Kaelren said it. Torvel's archive confirmed it. The structure is constantly moving, constantly adapting, rewriting its own composition in real time. You can't hit something that won't hold still. You can't reach the core of something that keeps changing shape around the core.
But Thalia can make things hold still.
The thought sharpens. I look at Thalia. I look at the wall she just anchored. I look at the Cathedral, its massive form visible over the second-ring wall, vine armor shifting and rewriting itself even now, petal-mouths gaping and closing, the entire structure in constant, adaptive motion.
She anchored a crack in a wall in twelve seconds. A small thing. A static structure. What she told the council was true: she's never tried it at scale. She doesn't know if she can hold something as large and complex and actively resistant as the Cathedral. The power required could pull her loose from the timeline.
But the principle is the same. Lock it in place. Pin it to the Rootline. Stop the shifting. Stop the adapting. Make the Cathedral hold still long enough for the core to be reached.
That's the anchor half. We already knew that. It's been part of the plan since the council meeting where Thalia first explained what she could do. But the anchor was always paired with a tactical strike on the core, and the tactical strike failed because the core anticipates tactical thinking.
We need the other half. The thing the core can't predict.
It cannot predict what isn't strategy.
The thought gets louder. I feel it pulling at me, the same way the Rootline pulls, the same way the locket pulled me out of the void. Something old and certain and fundamental trying to surface.
I think about the prophecy. The one Gerald spoke of at the beginning of all this, before the Elm Gate, before the iterations. The dark-haired one will be the key. Everyone assumed it meant Kaelren. The dark-haired prince. The corruption-marked warrior. The one who crossed realities to find me. Of course it meant him. Who else could it mean?
I look at Thalia.
Dark hair. Her father's jaw. Her mother's eyes. Root marks threaded with corruption. The ability to anchor anything she touches to the Rootline, to lock it in place, to make the shifting stop.
The dark-haired one.
Not Kaelren.
Thalia.
The key was never the strike. The key was the anchor.
If Thalia locks it in place, if she anchors the entire structure to the Rootline and holds it there, the Cathedral becomes something it has never been in fifty-three cycles: a fixed target.
What if the answer isn't destroying the core?
What if the answer is growing something inside it?
Not an attack. A transformation. The same thing I did to the Root construct in the Thornwood when Kaelren told me to make it bloom. I put my hand on a monster and grew flowers inside it until the monster became a garden.
Thalia anchors the Cathedral. Holds it still. And I reach the core, and instead of fighting it, I grow. I push life into the dead wood and collapsed reality and the consciousness of a man who surrendered to despair. Not to destroy him. To give him something else. To do the one thing no Kaelren, in any cycle, in any timeline, ever expected anyone to do.
Offer him a way out that isn't violence.
Peeble is quieter than usual, perched near my collar instead of pacing the air.
“You’re doing that thing again,” they say.