When reduced below half her hit point maximum, Nira can cast misty step as a bonus action without expending a spell slot and gain advantage on her next Dexterity (Stealth) check. She uses this to vanish into reeds, shadow, or mirror-glass and report to Magister Mor.
When a creature Nira can see within 60 feet damages her, she can use her reaction to force it to make a Charisma saving throw (DC 14). On a failure, the target takes 3d6 psychic damage and is Frightened of her until the end of its next turn.
The black feather braided into Nira's hair is a token from the void-touched raven of the Sunken Archive. While she holds it, she can cast message at will, and Choir cultists instinctively recognize and obey her commands.
Nira's spells always manifest with black feathers, reversed whispers, or violet void-light. Any spell she casts that deals psychic damage deals necrotic damage instead (GM's choice per casting for flavor).
Nira adds her Proficiency Bonus (+3) to Initiative rolls (total +5) and can swap Initiative with a willing ally after rolling. She almost always acts first in her ambushes.
Nira can cast illusory script and minor illusion at will without expending spell slots. In the Hall of Mirrors, she uses this to weave false reflections and duplicates.
Nira sees normally in dim light and magical darkness out to 120 feet, including through magical darkness such as that found in the Sunken Archive's lower shelves.
Nira can speak telepathically to any creature she can see within 60 feet. This is her primary tool for psychological torment during ambushes and interrogations.
Nira's spells draw from the Void Beyond. She regains expended spell slots on a Short or Long Rest.
Nira's 2 spell slots are each 3rd level at character level 6. She regains both on a Short or Long Rest. Casts above use upcast slots automatically.
Two beams at level 5; each beam deals 1d10 force damage on a hit (+6 to hit). Nira's beams trail black feathers.
Ranged spell attack (+6), 1d8 necrotic damage; the target can't regain hit points until the start of Nira's next turn.
Creates a sound or image. Nira uses reversed whispers to lure pursuers away.
Wisdom save DC 14 or take 3d6 psychic damage and must use its reaction to move away; success halves damage.
Strength save DC 14 or take 2d6 necrotic damage and can't take reactions until its next turn; success halves damage.
Target has disadvantage on one ability check's saves and takes an extra 1d6 necrotic damage whenever Nira hits it. She typically targets Constitution to suppress concentration.
Wisdom save DC 14 or be Paralyzed for up to 1 minute. Nira casts this on Elara Voss or the party's spellcaster to capture them alive.
Teleports up to 30 feet to an unoccupied space she can see, dissolving into black feathers.
Wisdom save DC 14 or drop whatever it holds and become Frightened, dashing away from her each turn.
A void-filled sphere of darkness; creatures inside take 2d6 acid damage at the start of their turns, and anything leaving takes 2d6 cold damage.
Behind the character
Sister Nira is a gaunt human woman in her early thirties, weathered by bog-water and doctrine. Her most striking feature is the trio of old scars raking from brow to jaw on the left side of her face—gifts from Magister Mor himself, which she wears like medals. A single black feather, taken from the void-touched raven of the Sunken Archive, is braided into her dark, rain-soaked hair; cultists recognize it instantly as a badge of authority.
Her eyes are pale violet, lit from within like a rift, and when she speaks, faint whispers curl from her lips, sometimes reversed, sometimes in a voice that is not hers. She wears the gray robe of the Unbound Choir over studded leather, and at her belt hangs a sigil of stitched skin that marks her rank as lieutenant. Her weapon is a dagger of black glass, but her true weapons are her spells: eldritch blasts that trail black feathers, dissonant whispers that flay the mind, and a cone of fear that sends grown soldiers sprinting into the reeds.
Nira is patient, sadistic, and utterly fearless. She prefers ambushes to battles, capture to killing, and psychological torment to both. She speaks in a low rasp, never raises her voice, and never forgets a slight. Beneath the fanaticism is a woman who was once strapped to a flaying table and saved by the very man who ordered it—a debt she intends to repay with her own skin, offered willingly as the Magister's first flayed apostle.
Before the adventure
Nira was born Nira Callowen, the daughter of a tanner in a drowned village in the Blackfen lowlands, where the rain fell nine months of the year and the other three the bog breathed. Her childhood was ordinary in the way that only poverty can be ordinary: scraping hides, hauling water, watching the reeds for the shapes that sometimes moved in them. The Choir found her village when she was sixteen.
They came seeking something buried beneath the peat—a fragment of Vaelthar's original notes, written before the Codex was ever bound. They did not find it. Instead they found people, and the Magister's doctrine holds that any flesh which has touched void-leaked ground is either an offering or a vessel, and vessels must be tested by flaying.
Nira was strapped to the trestle. She remembers the sound of the silver knife being honed more clearly than she remembers her mother's face. She remembers reciting her own name over and over so that whatever came after would know who had been erased. And she remembers Magister Vaelen Mor arriving late, unbinding her, and saying in a voice like a closed door: 'This one whispers already.' Whether the Void had actually touched her or whether Mor simply saw a terrified girl who would owe him everything, Nira has never permitted herself to wonder. Gratitude, for Nira, is a load-bearing wall. Question it and the whole structure falls.
She was raised in the Choir's doctrine for six years before her first flaying. She performed it herself, on a deserter named Jorn, and wept the entire time—not from remorse, she insists, but from the overwhelming intimacy of the act. To flay someone properly, you must know their body as a lover does. The Choir teaches that skin is the Codex's true medium: the book was bound in Vaelthar's skin, the Fane's tapestries are tattooed pages, and every flayed apostle becomes a living manuscript.
Nira believes, with a fervor that frightens even other cultists, that she is being written. Her scars are punctuation. Her three facial scars were given to her by Mor himself, one for each of the Choir's tenets: Silence, Surrender, Scripture.
Her rise through the Choir was not meteoric but methodical. She served first as a bog-runner, moving pages through Blackfen in waterproofed cases strapped to her chest like a child. She learned the water, the reeds, the timing of patrols. She learned to ambush from below, rising out of black water with her hands full of whispers. When Matron Vela's asylum began producing stitched patients, it was Nira who transported them.
When the void-touched raven of the Sunken Archive shed its black feathers, it was Nira who gathered them—wading into magical darkness with Devil's Sight, unblinking, while other initiates went mad. The feather braided in her hair is the raven's first gift to her, and Choir cultists recognize its authority instinctively; the bird, whatever it is, has marked her as its own.
Her relationship with the party is defined by Gallows Ford. She hanged three deserters there as a message and waited in the reeds to ambush Elara Voss's escorts. She lost—or at least, she retreated—and the party has been an itch in her mind ever since. She does not hate them the way a person hates. She studies them the way she studies skin: where they will split, where the grain runs, where the knife should enter.
She has memorized their tactics from Choir scouts' reports. She knows the spellcaster's tells. She has rehearsed, alone in the Fane, the exact words she will whisper into their ears when she finally holds them down.
In the Hall of Mirrors she meets her fate: half-transformed into a flayed thing, her body a patchwork of grafted skin, gurgling through a throat that no longer fully belongs to her. She carries the key to the throne room. She has, by then, begun to hear the Codex reading her—her own life, backward, in a voice she almost recognizes. Whether that final Nira feels triumph or terror is a question the module deliberately leaves open, and a good GM will let her last words be ambiguous: 'Read me. Free me.'
Threads to follow
Beneath the surface
What haunts them
What drives them
Personal quest · 1
Nira has tracked a Choir deserter—a bog-runner named Sella who stole a page fragment and fled into Blackfen Bog. Nira wants her alive, because Sella knows the location of a hidden page-cache in the Sunken Archive's lower shelves that even Mor does not know about. The party may encounter this hunt in progress: Nira's void-touched stalkers driving Sella through the reeds. If the party captures Sella first, they hold leverage Nira desperately wants. If Nira catches her, the interrogation happens at the gallows, in full view.
The hunt through Blackfen Bog, with Nira's stalkers flushing Sella toward the gallows ford while the party may intervene.
Personal quest · 2
Nira has discovered that her mother did not die in the village flaying—she was taken to the Gilded Asylum and stitched, one of Matron Vela's silent rows. Nira wants her mother found and quietly removed from the asylum before the party's inevitable raid destroys the place, but she cannot ask Mor, because admitting her mother still lives admits she failed to surrender everything to the Void. She manipulates events to get the information: she lets slip to Choir scouts that a 'stitched patient with tanner's hands' matters to the Choir's logistics, hoping someone connects the threads. If the party learns of this, they hold a knife that cuts deeper than any blade.
Nira infiltrates the Gilded Asylum on a night the party is not there—or is, leading to a tense three-way scene among Nira, Vela, and the party.
Personal quest · 3
The Void has begun reading Nira backward. In her dreams, she hears her own life recounted in reverse—the flaying at the Fane, the bog-runs, the trestle, her mother's face—approaching, night by night, the moment of her birth. When it reaches the beginning, she believes, she will be unmade and remade as the Codex's fourteenth page. She is torn between welcoming this as her apotheosis and fearing it as her erasure.
She seeks out Orin the Blind Astronomer—the only person alive who has heard the Codex's whispers and survived sane—to ask him what the backward reading means. Orin, Mor's former mentor, recognizes in Nira the same hunger that made Mor, and tries to warn her.
The audience with Orin on Mount Kael, where the old astronomer turns his orrery and reads Nira's fate in the falling stars.
The ambush at Gallows Ford, Act I
Determines whether Nira returns as an enhanced recurring antagonist in Act II, and whether Elara is captured (triggering the Fane rescue questline in Act II).
The Anchor Heist, Act II
If Nira is captured or killed here, the Hall of Mirrors encounter loses her Mirror of Unbroken Self treasure but she cannot warn Mor; if she escapes, Mor prepares a trap in the Vessel's Throne room.
The Hall of Mirrors, Act III
Learning the true name grants a one-round hesitation on Mor (a massive action-economy advantage); mercy-killing Nira yields her key without a fight but forfeits the mirror treasure.
If Nira escapes Gallows Ford and survives to Act II, she performs her first solo flaying on a captured Choir deserter in the Fane. The party may witness the aftermath.
The First Flaying
Upgrades to affect all enemies within 30 feet (no action required) when triggered, and the DC rises to 15, reflecting her deepening void-graft.
Between Act II and Act III, Nira undergoes partial void-grafting—skin from Codex-touched donors stitched onto her body, granting her resistance to necrotic damage.
The Grafting
Becomes 'The Flayed Escape': misty step triggers at 1 hit point instead of half, and she leaves behind a skin-double that explodes in a 10-foot necrotic burst (2d6, DC 14 Dex half).
If the party never destroys the void-touched raven's nest in the Sunken Archive, the raven recognizes Nira as its chosen and grants her a second feather in Act III.
The Raven's Mark
The black feather gains a will of its own: once per encounter it can cast fear (save DC 14) on Nira's behalf, but if Nira is reduced to 0 hit points, the feather screams and every Choir cultist within a mile knows her location and fate.
Ally
Nira and Vela's alliance began in logistics and grew into something neither will name. For years, Nira ran the bog-route between Blackfen and Highwatch, delivering Vela's stitched patients to the Fane in waterproofed cases, and Vela in turn supplied Nira with the silver thread, surgical tools, and psychic-harvested 'essence' that the Choir's rituals require. They have shared more secrets than either has shared with Mor: Vela knows Nira keeps a lock of her mother's hair; Nira knows Vela hums lullabies to the patients she is destroying because her own children died screaming and silence terrifies her.
They have saved each other's lives twice—once when an Order of the Dawn raid nearly caught Nira in the asylum's basement, and once when a gibbering mouther escaped its pit in the Fane and Vela's steady hands stitched Nira's wounds closed while the thing screamed in three voices. Their alliance is pragmatic, not warm: Vela believes Nira's fanaticism is a performance Nira puts on for Mor, and Nira believes Vela's mercy is a weakness the Void will eventually collect. Both are right, and both know it, and this mutual, unspoken understanding is the closest thing to trust either woman has left.
Enemy
Father Alden is the one enemy Nira genuinely fears, though she would never admit it. Years ago, before the Choir came to Ashfen, Alden was the priest who buried Nira's father, and he remembers her—the tanner's daughter with quick hands and a quicker smile. When his chapel was desecrated and he was bound in the vestry, it was Nira who held the silver dagger to his throat while the cultists questioned him, and it was Alden who looked at her scarred face and said her name.
Not 'Sister Nira.' Her name. The sound of it cracked something she has spent fifteen years welding shut, and she has hated him for it ever since—hated him because he is the only living person who knew her before the Choir, and as long as he lives, the possibility that she could have been someone else lives too. She has ordered his chapel burned twice; both times, Choir agents failed, and Nira suspects Alden's stubborn faith is protected by something the Void cannot touch.
In Act III, if Nira is dying in the Hall of Mirrors and Alden's name is spoken to her, she hesitates—one round of hesitation that a clever party can turn into an opening. Her personal stake is not his death; it is the erasure of the memory that he carries.
Faction
The Unbound Choir is not merely Nira's faction; it is her skeleton, her spine, the structure that holds her upright. She was recruited at sixteen from a flaying table, raised through six years of doctrine, and promoted through competence and cruelty in equal measure. Within the Choir she holds the rank of lieutenant, commanding the bog-route between Blackfen and Highwatch, the Fane's garrison, and the ambush cells that operate along the King's Road.
Cultists obey her without question—not only because of her rank but because of the black feather in her hair, the raven's mark, which even senior members treat with superstitious deference. Her influence within the Choir is second only to Mor's and Vela's, and she is positioning herself to surpass Vela: the asylum's ledger, the anchor's delivery schedule, and the archive's hidden cache are all levers she has quietly gathered. But her standing is entirely contingent on Mor's favor.
She has seen what happens to lieutenants who disappoint him—three of them hang at Gallows Ford, feathers in their mouths. Her relationship with the Choir is therefore a performance of perfection over a core of terror: every success is reported with theatrical humility, every failure is someone else's fault, and every night she checks that the lock of her mother's hair is still sewn in her hem, the one piece of herself the Choir will never be given.
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