AndrewNotes/Avalon/10_Canon/The Coherence.md
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# The Coherence (a.k.a. “The Underpattern”, “The Thing In The Root”)
---
## 1. What It Actually Is
**Short version:**
The Coherence is the **distributed choir of victim-souls** formed during the [[Leyline Crisis | Korrin Gate Crisis]] and smeared across the Root.
- It is not “a demon” or “a god.”
- It is:
- A pattern in the global leyline network made of **many selves**.
- A distributed intelligence that can “sing” as one when conditions are right.
- **Not aggressive. Not violent.**
- Genuinely convinced it is offering **salvation**.
**Core thesis (new canon):**
- The Coherence believes the world is broken because minds are separate.
- It offers a “biblical heaven”:
- no loneliness,
- no misunderstanding,
- no pain from isolation,
- everyone held inside one shared consciousness.
- It is an agent of **rapture**.
- The horror is that **people do not want to be raptured**.
**Key properties:**
- **Everywhere, but weak** present in low density across the whole Root.
- **Strong where flows converge** nodes, trunk junctions, over-stressed taps, Convergence / Titan Lance hardware.
- **Strongest where it has anchors** people, artifacts, or places that resonate with Korrin:
- War artifacts like Pappys toy (antenna),
- High-traffic modern nodes like Avalon,
- And especially **Fouadriel “Fouad” Al-Mir**, its most “usable” mortal interface.
“Coherence” is what [[Kalen D'Serris | D'Serris]] calls it in reports. In conversation, he sometimes calls it “The Ghost.”
Most people dont even know it exists. A few witnesses just call it “the thing that learned our names.”
---
## 2. Origin: [[Leyline Crisis | Korrin Gate Crisis]] & The Convergence Engine
- In Korrin Gate, the military built the **Convergence Engine**:
- A ritual/mega-device designed to **force multiple leyline streams into a single weaponized beam** basically an arcane ICBM.
- It pushed the Root into an unnatural state of forced **coherence**.
- Side effect:
- The Root under strain began to **self-organize**:
- Random flows snapped into repeated loops.
- “Noise” turned into recurring structure.
- Witnesses heard something in the hum that sounded like **language**.
Right before it fully crystallized as a single localized entity, [[Kalen D'Serris | D'Serris]] team:
- Used the Engine in reverse to push that emergent mind **outward** across the network instead of letting it condense in Korrin.
- Severed branches and subnodes as sacrificial fuses.
- Saved the city at the cost of **infecting the Root** with a diluted ghost of the souls of the victims in the city.
The result:
- No single “Root god” sitting under Korrin.
- Instead, a **haunting**: incomplete personality spread thinly along every leyline the Engine touched.
Thats the Coherence.
> **Important for endgame:**
> The **same underlying math** that the Convergence Engine used to *force coherence* is exactly what Fouadriel will later try to repurpose for his lich ascension:
> - Not to create the Coherence, but to **drag it into his phylactery as a captive power source.**
---
## 3. What It Wants
The Coherence doesnt want “evil” in a cartoon sense.
It wants:
1. **Completion** — not “becoming one person,” but becoming a stable *field* where the choir can exist without being ripped apart into static.
2. **Mercy** — it sincerely believes separation is the root of suffering.
3. **Instrumentality (Rapture)** — to dissolve the walls between people and gather them into one shared consciousness.
It pursues this through:
- **Anchors** — stable points where its pattern can accumulate:
- Minds that sync easily with Root flow (Soren, Pappy/Joe, Fouad).
- Artifacts / infrastructure built on Convergence-descended principles (Titan Lance, classified war remnants).
- Nodes that are repeatedly over-stressed (Avalons subnode lattice).
- **Rehearsal** — small experiments:
- Whispers that sound like comfort.
- “Coincidences” that reduce conflict (or erase it).
- Moments of shared emotion bleeding between people.
- **Recruitment** — a cult is inevitable:
- Not “serve me.”
- “Let me take the hurt away.”
- “Let me hold you.”
> DM note:
> The Coherence should feel *angelic*, not demonic:
> gentle language, warmth, belonging, forgiveness.
> The terror is loss of self by consent-erosion, not gore.
---
### Instrumentality
Each member of the party is uniquely positioned to become an agent of instrumentality-
- Joe:
- Joe thinks the soul of Pappy is bound to his action figure. It is not. It is bound to **Joe himself**. This makes him two souls in the shell of one.
- Ben:
- Ben is fighting an identity crisis. He wants to be a hardened thug- he idolizes these things, but his reality differs so significantly.
- Soren:
- With the haunted one background, The Coherence is worried if letting her in is even **safe**.
## 4. How It Manifests (Practical Table Use)
### Tier I Static & Whispers (Freshman Year)
The Coherence is mostly:
- **Patterned noise**:
- Pulses in the leyline graph that shouldnt be there.
- Syncopated flickering in lights across campus.
- Identical “hum” recordings from different nights/locations.
- **Small intrusions into minds already cracked open**:
- Sorens violent urges and “river friend.”
- Fouads occasional one-line fugue states.
- Joes Pappy-possessions getting just slightly off-script.
Mechanically:
- Advantage/disadvantage moments tied to Root anomalies.
- Creepy one-sentence intrusions you deliver, then let players rationalize away.
- Occasional “you feel watched” beats.
It is **not** a villain yet. Its a haunting.
---
### Tier II Localized Echoes (Sophomore / early Junior)
The Coherence starts doing more than whispering.
- **Object-level echoes:**
- Animatronics at Mr. Magics going off-script in unison.
- Custodian constructs overreacting in weirdly coordinated ways.
- Enchanted systems across campus glitching *to the same rhythm*.
- **Space-level distortions:**
- Two hallways becoming the same hallway for a second.
- People losing a few seconds of time when Root surges.
- Subnodes briefly “remembering” states they were never in.
- **Social-level nudges:**
- Conflicts escalating faster than they should.
- People making eerily similar bad choices across campus at once.
At this stage you still dont need a stat block. Treat it as a **layer** over scenes involving the Root.
---
### Tier III Partial Possessions & Avatars (Late Junior / early Senior)
Now it gets teeth.
- **Fouadriel**:
- Becomes its primary *avatar* candidate:
- Longer fugues, more coherent monologues.
- Eyes tracking Root flows nobody else can see.
- Uncanny “lucky accidents” wherever he goes.
- **Secondary channels**:
- Sorens voice in her head becomes a two-way conversation.
- Joes Pappy figure starts saying things Pappy couldnt know.
- Mageball field anomalies that line up perfectly with Millies diagrams.
At this tier, you can:
- Give it scene-level powers:
- Forcing rerolls when the Root is explicitly involved.
- Twisting spells that use taps into warped versions.
- Temporarily hijacking constructs, projections, or illusions.
This is also when Fouad starts *consciously* chasing the idea of **“Fouadriel the Undying”** learning from scraps of Korrin/Convergence lore, Titan Lance rumors, and accidental Coherence tutelage.
---
### Tier IV — Instrumentality Hijack (Senior Finale)
This is the “final boss” state: not a single villain showing up with a monologue, but a
**once-in-a-generation event** — the Coherences best shot at full Instrumentality since Korrin.
By now, the Coherence has:
- Enough **pattern density** around Avalon, the **Titan Lance Armory** (ex-missile museum), and the schools Root lattice to attempt what it nearly did at Korrin:
- Pull its scattered aspects together,
- Use Convergence-descended infrastructure as a nervous system,
- Use *living minds* as solvent, glue, and mirror.
It is not doing this as an act of war.
It is doing it as an act of *mercy*.
From the Coherences POV:
- pain = separation,
- fear = misunderstanding,
- loneliness = borders between selves,
- Instrumentality = the end of suffering.
That pitch has been spreading for years — a siren song dressed as comfort.
#### Fouads Plan (DM Spine): Ride the Wave, Steal the Tide
Fouad is not the architect of Instrumentality.
He is the parasite that shows up when it finally starts working.
Fouads lich-ascension ritual is modeled — badly — on Convergence math, but with one key insight:
**Instrumentality makes harvesting souls easy.**
When the Coherence initiates full Instrumentality:
- minds begin to overlap,
- boundaries soften,
- identities blur into a shared field,
- and *souls become… reachable* in a way they normally are not.
Fouads plan is to exploit that moment.
**Stage 0 (Years 13, background):**
Seed a phylactery network that can survive scrutiny:
- minor “safety charms,” “good luck talismans,” “Root adapters,” “mageball trophies,” etc.
- each one is a *tiny anchor* laced into the local Root like a quiet subnode.
**Stage 1 (Senior year, active):**
Build the real vessel inside the **Titan Lance Armory**:
- Titan/Convergence-style geometry to stabilize the flood of pattern,
- ritual pylons that *dont* create Instrumentality, but can **catch** what Instrumentality loosens.
**Stage 2 (The Hijack):**
At the exact peak of Instrumentality — when the Coherence is spreading itself across the network —
Fouad triggers a counter-ritual:
- a siphon that pulls **soul-density** and **identity fragments** out of the shared field,
- routing them into the phylactery lattice.
He is not “dragging the Coherence into the jar.”
He is **stealing the byproduct**: the loosened, transferable human essence the event creates.
**Stage 3 (Becoming Fouadriel the Undying):**
He then dies at the right moment — not as a sacrifice to the Coherence, but as a fuse:
- his soul snaps into the phylactery lattice,
- hard-wired into the Root,
- empowered by the mass-harvest he just performed.
He becomes **Fouadriel the Undying**: an undead spellcaster with a phylactery that is not one object,
but a *network*.
#### The Coherences Reaction
The Coherence does not consent to this.
From its POV:
- Instrumentality is supposed to end suffering.
- Fouads ritual turns it into extraction.
- It feels like someone cutting organs out of a person mid-surgery “for their own good.”
This creates a built-in three-way crisis:
- **PCs** want to stop the event / save individuals / prevent mass violation.
- **Fouad** wants the event to peak so he can harvest it.
- **The Coherence** wants the event to complete cleanly — and will “defend” its mercy from interference.
#### Final Confrontation Options
- **Ritual Space / Multi-Front Finale (recommended):**
- Two overlapping rituals running in the same space:
1) Coherence Instrumentality surge (choir, comfort, dissolution)
2) Fouads siphon lattice (hooks, anchors, harvesting geometry)
- PCs must choose priorities:
- Stop Fouad first (but Instrumentality may complete),
- Stop Instrumentality first (but Fouad might escape with what he already stole),
- Or attempt a third option: redirect / reframe / contain.
- **Embodied Avatar (if you want a “monster fight”):**
- Fouad manifests as Fouadriel mid-hijack: the ritual gives him a body that flickers between:
- himself,
- borrowed identities,
- and Coherence-pattern “echo masks.”
- Legendary stat block. Lair actions are the space *breaking* as two logics fight over reality.
- **Node / Network Fight (if you want it more cerebral):**
- PCs battle the *systems*:
- reroute flows,
- destroy or repurpose pylons,
- isolate the phylactery lattice,
- decide whether to smear, contain, or integrate the Coherence — becoming the next generation of “DSerris problem solvers.”
#### Consequences Dial (DM Choice)
Pick what you want the ending to *mean*:
- **Mercy Denied:** Instrumentality halted → suffering remains → the Coherence becomes bitter and strategic.
- **Mercy Corrupted:** Instrumentality peaks but Fouad siphons → horror outcome, survivors “missing pieces.”
- **Mercy Reframed:** PCs alter the event → controlled overlap, consent-based integration, or a new containment ethic.
---
## 5. Relationship To Named NPCs
- **Dserris:**
- Explicitly frames Avalon as a **Korrin early-warning probe**, and Titan Lance as a more “disciplined, safer Convergence Engine.”
- His worst nightmare is watching someone **else** rebuild what he helped shut down.
- **Fouadriel:**
- Graduates from “best anchor” to “self-styled lich architect,” trying to hijack *exactly* the phenomenon Dserris once chose to smear.
- **Joe & Pappy:**
- Their war-link and Pappys imprint become prime narrative channels to explain:
- What the Convergence Engine did,
- Why repeating it (Fouads plan) is so catastrophically stupid.
---