The Misremembered Aviary

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Large Undead, Neutral

Armor Class 18 (stitched natural armor)

Hit Points 190 (20d10+80)

Speed 10 ft. fly 50 ft.

STR 8 (-1)

DEX 18 (+4)

CON 18 (+4)

INT 14 (+2)

WIS 17 (+3)

CHA 21 (+5)

Saving Throws Dex +9, Wis +8, Cha +10

Skills Insight +8, Stealth +9, Perception +8

Damage Resistances bludgeoning, piercing, and slashing from nonmagical attacks; psychic

Damage Immunities necrotic, poison

Condition Immunities charmed, frightened, poisoned, stunned

Senses darkvision 120 ft., passive Perception 18

Languages Common, Auran, telepathy 120 ft.

Challenge 15 (13,000 XP) Proficiency Bonus +5

The Empty Perch. The Misremembered Aviary is bound to protect an invisible perch that no longer exists. It always knows the perch's location, and it has advantage on attack rolls and saving throws while within 30 feet of it. A creature that succeeds on a DC 20 Intelligence (Investigation) check can determine where the absent perch should be, though nothing visible occupies that space.

Thousand-Throated Prophecy. The choir cannot be surprised, and it has advantage on Wisdom (Perception) checks that rely on hearing. A creature that starts its turn within 60 feet of the choir and can hear it must succeed on a DC 18 Wisdom saving throw or hear a detailed prediction of its immediate future. Until the start of its next turn, the creature has disadvantage on its first attack roll and saving throw, as it tries to avoid the forecast. On a successful save, the creature is immune to this trait for 24 hours.

Stitched Flock. The choir occupies its space as a single creature, but its body is composed of dozens of independently twitching, taxidermied songbirds. It can move through an opening as narrow as 2 feet wide without squeezing, and it can occupy another creature's space. It cannot regain hit points except through its Rehearsal of the Unborn legendary action.

Legendary Resistance (3/Day). If the creature fails a saving throw, it can choose to succeed instead.

Actions

Multiattack. The Misremembered Aviary makes three Beak attacks. No more than two attacks can target the same creature.

Beak. Melee weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 8 (1d8+4) piercing damage, plus 7 (2d6) psychic damage. The target hears a tiny, discordant voice whispering what it will regret one minute from now.

Crooned Omen (Recharge 5-6). The choir sings a future that is almost, but not quite, true in a 60-foot cone. Each creature in that area that can hear the song must make a DC 18 Wisdom saving throw, taking 10d8 psychic damage on a failed save, or half as much on a successful one. On a failed save, a creature is also frightened for 1 minute. A frightened creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. The song can be heard through doors and thin walls, but not by creatures that cannot hear.

Rearrange the Recollection (3/Day). The choir targets one creature within 60 feet that can hear it. The target must succeed on a DC 18 Charisma saving throw or be forced to relive a false memory until the end of its next turn. During that time, the creature is incapacitated, its speed is 0, and it believes one visible ally is the choir's missing conductor. The effect ends early if the creature takes damage.

Reactions

A Note Before the Blow. When a creature the choir can hear makes an attack roll against it, the choir sings one syllable from the attacker's future. The attacker must reroll the attack and use the new roll. The choir can use this reaction three times per day.

Legendary Actions

The Misremembered Aviary can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. The choir regains spent legendary actions at the start of its turn.

Fluttering Bite. The choir makes one Beak attack.

Wrong Direction. The choir moves up to half its flying speed without provoking opportunity attacks. One creature within 5 feet of the space it leaves must succeed on a DC 18 Dexterity saving throw or take 2d6 slashing damage from snapping beaks.

Rehearsal of the Unborn (Costs 2 Actions). The choir regains 15 hit points and one random bird tears free from its body, flies toward the Empty Perch, and vanishes. The choir cannot use this action if it is within 30 feet of the Empty Perch.

Faltering Refrain (Costs 3 Actions). Each creature within 30 feet that can hear the choir must succeed on a DC 18 Wisdom saving throw or be unable to take reactions and have disadvantage on concentration checks until the end of its next turn.

Environment Forest, Swamp, Urban

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"Tomorrow, you will remember today differently." — the last line of the Vey-Marrow funeral hymn

Lore & Description

Appearance

The Misremembered Aviary is a floating knot of taxidermied songbirds stitched together with black gut thread, silver wire, and strands of human hair. Jays, wrens, finches, nightingales, and long-extinct birds press shoulder to shoulder in a ragged sphere, their glass eyes shining with different moons. Their wings beat at conflicting rhythms, yet every throat sings in perfect harmony. Some birds have been sewn upside down; others possess human teeth behind their lacquered beaks. When the choir turns, its many heads swivel independently toward futures that have not happened.

Behavior & Origins

The choir was assembled by the prophet-burialist Ilyra Voss to guard the final song of Saint Orun, a song said to preserve a vanished kingdom. When Saint Orun and the kingdom disappeared from history, the song became meaningless, but the Aviary's command remained. It now protects the Empty Perch in the ruined bell tower of Vey-Marrow, attacking anyone who approaches the place where the saint's sacred bird was once meant to land. The choir wants only one thing: for someone to bring it proof that the kingdom of Orun still exists. It accepts maps, royal seals, surviving citizens, or even a convincing lie if the lie is sung beautifully enough.

Running The Misremembered Aviary

Tactics

The choir opens with Crooned Omen, preferably from above or behind cover, then uses Wrong Direction to scatter characters away from the Empty Perch. It focuses Beak attacks on creatures that fail its prophecy, saving A Note Before the Blow for a damaging spell or critical attack. When bloodied, it uses Rehearsal of the Unborn to recover while retreating toward the perch; it fights to the death if the perch is threatened, but may flee if offered convincing evidence that Orun has returned.

DM Tips

Telegraph the creature with birds singing from empty trees, corpses of songbirds arranged in circles, and villagers who accurately describe events that have not happened yet.
Give each player a short, unsettling prophecy before initiative; make it true in an indirect or slightly incorrect way rather than using it to negate their choices.
Use the Empty Perch as a visible battlefield landmark through absence: dust avoids a particular shape, rain falls around it, or nearby birds refuse to cross the space.
For a weaker party, reduce the choir's hit points to 150 and remove A Note Before the Blow; for a stronger party, let Crooned Omen recharge on a 4-6.

Loot

The Unhatched Note — A hollow glass egg hidden among the bird bodies. When held to the ear, it sings one true detail about a nearby creature's future, but omits an important consequence.
Vey-Marrow's Silver Conductor's Baton — A tarnished baton bearing the crest of a kingdom erased from every surviving record. Waving it near the Empty Perch causes one invisible feather to fall.
Thread of the Last Dawn — A spool of black gut thread that can stitch a destroyed object back together, though the restored object always differs in one memorable detail.

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Generation Info

Original prompt:
"CR 15: A choir of taxidermied songbirds that sings the listener's future, slightly wrong. It is protecting something that no longer exists."

Created: Oct 2, 2026
Modified: Oct 25, 2026

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