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Vhalzur the Resonant, the Bell-Eater - AI-generated fantasy Monster

Vhalzur the Resonant, the Bell-Eater

The monastery’s last abbot discovered a subterranean spirit beneath the foundations. Believing the spirit to be a demon, he attempted to imprison it inside the sacred great bell during the monastery’s final flood. The ritual failed. The bell absorbed the abbot, the spirit absorbed the bell’s prayers, and the rising water carried the remains of the monks into the crypt. The resulting entity became known as the Bell-Eater. It remembers that the second guardian, the Drowned Cantor, once served as the abbot’s living voice. The Bell-Eater partially transformed the Cantor into an echo-bound thrall, yet fears the Cantor because the creature still remembers the complete binding hymn.

Monsters
Huge elemental · Deadly · Unique

Vhalzur the Resonant, the Bell-Eater

A subterranean spirit fused with a sacred bronze bell, the abbot’s corpse, and the drowned remains of an entire monastery. The Bell-Eater weaponizes prayer, vibration, collapsing masonry, and rising blackwater while guarding the bell crypt that anchors its existence.
AC19
HP225/225
CRDeadly
Init
STR
DEX
CON
INT
WIS
CHA
ConditionsNone

Combat

AC 19 · HP 225 · Deadly

Vhalzur the Resonant, the Bell-Eater

Huge elemental (elemental), chaotic evil
Armor Class19, natural armor
Hit Points225 (18d12 + 108)
Speed
30 ft.,
Swim 40 ft.,
Climb 30 ft.,
Can move through spaces containing blackwater or loose rubble without penalty
STR
DEX
CON
INT
WIS
CHA
Saving ThrowsStrengthConstitutionWisdomCharisma
SkillsIntimidationPerceptionReligionStealth
Damage Resistances
Bludgeoning, piercing, and slashing damage from nonmagical attacks,
Cold,
Fire,
Necrotic,
Psychic
Immunities
Blinded,
Charmed,
Deafened,
Exhaustion,
Frightened,
Grappled,
Paralyzed,
Petrified,
Poisoned,
Prone,
Restrained,
Thunder damage,
Poison damage
Weaknesses
Magical silence suppresses the Bell-Eater’s Stolen Voices trait and prevents it from using Deafening Litany or Resonant Command while it remains inside the silence.
The Bell-Eater has disadvantage on attack rolls and Constitution saving throws while all three resonant chimes are destroyed.
Radiant damage suppresses its Resonant Chime Network regeneration until the start of its next turn.
The Abbot’s Binding Reliquary can restrain it, but using the relic without first destroying the chimes awakens the entire monastery.
Senses
Blindsight 60 ft.,
Darkvision 120 ft.,
Tremorsense 60 ft.,
Perception through sound and vibration within the bell crypt
Languages
Common,
Abyssal,
Telepathy 120 ft.
ChallengeDeadly
Proficiency Bonus+5
Spell Save DC19
Spell Attack Bonus+11
Passive Perception19
Experience Points10,000
Amphibious. The Bell-Eater can breathe air and water.
Bell-Fused Form. The Bell-Eater can move through a space as narrow as 1 inch wide without squeezing if the space contains water, loose rubble, or vibrating metal.
Legendary Resistance. The Bell-Eater has advantage on saving throws against spells and other magical effects. If it fails a saving throw, it can choose to succeed instead three times per day.
Siege Monster. The Bell-Eater deals double damage to objects and structures.
Resonant Chime Network. The Bell-Eater is connected to three resonant chimes in the crypt. While at least one chime remains intact, it has advantage on Constitution saving throws and can use its Redirect the Resonance reaction. While all three chimes remain intact, it regenerates 10 hit points at the start of its turn if it is in the bell crypt. This regeneration stops until the start of its next turn if it takes radiant damage.
Vibration Sense. The Bell-Eater automatically detects vibrations caused by movement, speech, or spellcasting within 120 feet in the bell crypt. It cannot be surprised while in the crypt.
Voice Beneath the Bell. The Bell-Eater’s thunder damage ignores resistance to thunder damage. A creature protected by magical silence, a sound-dampening effect, or the binding relic is immune to this benefit and instead treats its resistance normally.
Stolen Voices. If the Bell-Eater is in the bell crypt, it can speak through any bronze object or body of water within 300 feet. It can imitate any voice it has heard, but it cannot perfectly reproduce a living creature’s thoughts or memories.
True Silence. The Bell-Eater is immune to the deafened condition, but magical silence suppresses its Stolen Voices trait and prevents it from using Deafening Litany or Resonant Command while it remains inside the silence.

Spells

Silence (level 2, illusion). The Bell-Eater creates a sound-dampening sphere centered on a point within 120 feet. For 1 minute, no sound passes through the sphere’s boundary, and creatures inside have advantage on saving throws against thunder damage. The Bell-Eater cannot use Deafening Litany while the sphere overlaps its space.
Phantasmal Force (level 2, illusion). The Bell-Eater speaks in the voice of a dead creature it has heard. One creature within 60 feet that can hear it must succeed on a Wisdom saving throw or be frightened for 1 minute. The target repeats the save at the end of each of its turns.
Wall of Force (level 5, evocation). The Bell-Eater creates a wall of violently vibrating blackwater and bronze fragments. The wall can be up to 60 feet long, 20 feet high, and 1 foot thick. A creature entering the wall for the first time on a turn takes 18 () thunder damage.
Control Water (level 6, transmutation). The Bell-Eater floods a 30-foot-radius area centered on a point within 120 feet. The area becomes difficult terrain and heavily obscured for 1 minute. The Bell-Eater can see normally through this water.

Actions

Multiattack. The Bell-Eater makes two attacks, using Bronze Maw or Resonant Tendril in any combination.
Bronze Maw. Melee Weapon Attack: to hit, reach 15 ft., one target. Hit: 18 () bludgeoning damage plus 9 () thunder damage. If the target is Large or smaller, it must succeed on a Strength saving throw or be pulled up to 10 feet toward the Bell-Eater.
Resonant Tendril. Melee Weapon Attack: to hit, reach 20 ft., one target. Hit: 14 () bludgeoning damage plus 7 () necrotic damage, and the target is grappled, escape . Until the grapple ends, the target is restrained by a vibrating strand of blackwater and takes 7 () thunder damage at the start of each of its turns.
Deafening Litany. The Bell-Eater releases a prayer composed of a hundred stolen voices. Each creature of its choice within 30 feet must make a Constitution saving throw. On a failed save, a creature takes 36 () thunder damage, is deafened for 1 minute, and is stunned until the end of its next turn. On a successful save, it takes half as much damage and is not stunned. A deafened creature can repeat the saving throw at the end of each of its turns, ending the deafened condition on a success. The Bell-Eater cannot use this action again until the start of its next turn.
Summon Stolen Echoes. The Bell-Eater strikes the crypt’s corroded chimes. Choose up to three points it can see within 120 feet. At each point, a spectral monk appears in a 10-foot-radius sphere. Each creature in a sphere must succeed on a Wisdom saving throw or take 10 () psychic damage and become frightened until the end of its next turn. The echoes vanish at the end of the Bell-Eater’s next turn. Instead of creating an echo, the Bell-Eater can command one existing echo to move up to 30 feet and make a spectral hand attack against one creature within 5 feet of it, dealing 7 () psychic damage on a hit.
Collapse the Crypt. The Bell-Eater causes masonry to collapse at a point it can see within 90 feet. Each creature in a 15-foot-radius cylinder, 20 feet high, must make a Dexterity saving throw. A creature takes 22 () bludgeoning damage on a failed save, or half as much on a success. The area becomes difficult terrain, and a creature that fails the save is restrained beneath rubble. A restrained creature can use an action to make a Strength check, freeing itself on a success. The Bell-Eater cannot use this action again until the start of its next turn.
Command the Blackwater. The Bell-Eater changes the water level in the bell crypt. It can raise or lower the water by up to 10 feet, provided the crypt’s flood channels remain intact. Creatures swimming in the area must succeed on a Strength saving throw or be moved up to 20 feet in a direction of the Bell-Eater’s choice and knocked prone. Flooded areas become heavily obscured by blackwater and count as difficult terrain for creatures without a swim speed.

Reactions

Redirect the Resonance. When the Bell-Eater takes thunder, psychic, or radiant damage, it reduces the damage by 10 and moves one intact resonant chime up to 20 feet. If no chimes remain, it cannot use this reaction.

Legendary Actions

Echoing Drift. The Bell-Eater moves up to half its speed without provoking opportunity attacks, passing through spaces occupied by blackwater or rubble as though they were normal terrain.
Tendril Strike. The Bell-Eater makes one Resonant Tendril attack.
Steal the Voice (costs 2 actions). One creature the Bell-Eater can hear within 60 feet must succeed on a Wisdom saving throw or be compelled to speak in a dead monk’s voice until the end of its next turn. While compelled, it cannot cast a spell with a verbal component.
Resonant Command (costs 3 actions). The Bell-Eater uses Summon Stolen Echoes or Command the Blackwater.
Role
Legendary boss and environmental controller
Built for
12th-level party of four characters

Gear

  • Abbot’s Binding Reliquary (Relic, Priceless; potentially dangerous)A fist-sized bronze reliquary engraved with the abbot’s final prayer. As an action, a creature adjacent to the Bell-Eater can present the relic and force it to make a DC 19 Charisma saving throw. On a failure, the Bell-Eater is restrained for 1 minute. It can repeat the save at the end of each of its turns. Activating the relic also awakens the monastery’s drowned dead unless all three resonant chimes have been destroyed.
  • The Drowned Great Bell (Lair Anchor, Ancient sacred artifact)A corroded bronze bell with a cracked interior and a clapper made from fused human vertebrae. The Bell-Eater can merge with it if it retreats.
  • Resonant Chimes (Environmental Hazard, Three crypt anchors)Three floating bronze chimes, each inscribed with a fragment of the monastery’s founding oath. Destroying a chime requires AC 17 and 25 hit points of damage, and each chime is immune to psychic and poison damage.

Feats

Legendary Resistance, 3/day
Amphibious
Siege Monster
Innate Spellcasting

Notes for the game master

Use the 2014 D&D 5e monster format unless the campaign uses another rules revision.
The Bell-Eater is calibrated as a solitary challenge for a capable party around 12th level, but the lair actions and environmental hazards can raise the effective difficulty.
If the party has no access to magical silence or sound-dampening effects, make the three resonant chimes clearly destructible and place them where tactical movement can reach them.
The second monster is the Drowned Cantor, a separate echo-bound guardian partially transformed by Vhalzur. Vhalzur commands it publicly but fears that it remembers the original binding hymn.
A creature standing within the binding relic’s light has advantage on saving throws against the Bell-Eater’s thunder and psychic effects.

Tactics

  1. Opening

    It begins submerged in the bell’s shadow, speaking through the voices of dead monks. It opens with Deafening Litany, then raises the water and sends echoes toward isolated characters. It does not immediately attack anyone carrying the binding relic, instead demanding that they kneel.

  2. Mid-fight

    It uses Command the Blackwater to divide the party, Summon Stolen Echoes to create flanking threats, and Collapse the Crypt to punish clustered characters. It attacks characters who destroy the chimes and uses its reaction to protect the most important remaining chime.

  3. End of the fight

    When reduced below 60 hit points, the Bell-Eater raises the water level, collapses pillars, and focuses Deafening Litany on healers and spellcasters. It attempts to force the characters beneath the bell, where it can merge with the resonant chimes and regain control of the crypt.

  4. Retreat

    The Bell-Eater does not willingly flee the bell crypt. If reduced below 30 hit points while at least one resonant chime remains, it withdraws into the bell and becomes an intangible voice, threatening to awaken the entire monastery. Destroying all three chimes prevents this retreat.

How it fights

Raise the water before engaging directly.
Use stolen voices to force verbal spellcasters into silence or panic.
Keep at least one resonant chime intact until the characters are committed to the crypt.
Collapse masonry behind the party to prevent easy retreat.
Use the bell’s shadow and blackwater for concealment.
Punish characters who cluster near the binding relic.
If the party attempts to destroy the great bell, redirect all attacks toward that character.

Who it attacks first

Characters carrying the binding relic
Spellcasters using verbal components
Characters attempting to destroy resonant chimes
Healers and characters separated by rising water
The character who appears most willing to bargain

Works well with

The Drowned Cantor can use its stolen hymn to restore one destroyed resonant chime unless the party silences or incapacitates it.
Drowned monks and echo-bound undead gain advantage on attacks while the Bell-Eater’s water level is above 10 feet.
The Bell-Eater can use the bell crypt’s vertical space to keep melee characters separated from the chimes.
A character carrying the binding relic can draw the Bell-Eater’s attention, allowing allies to destroy chimes or rescue the Drowned Cantor.

How to beat it

Silence, sound-dampening magic, and effects that prevent thunder damage reduce the Bell-Eater’s control over the crypt.
Destroying the three resonant chimes removes its Resonant Chime Network trait and prevents its retreat into the bell.
The binding relic can weaken or restrain the Bell-Eater, but activating it risks awakening the entire monastery.
Keeping the party spread out limits the impact of Deafening Litany, Summon Stolen Echoes, and Collapse the Crypt.

Ways to avoid a fight

It can bargain for the party’s silence, offering directions through the monastery in exchange for one character surrendering their name or voice.
It can imitate a dead ally, deceased relative, or trusted religious figure to create a conversation before combat.
It can reveal that the Drowned Cantor is partially transformed and can be restored if the complete binding hymn is recovered.
It can submit to the binding relic if the characters promise to carry the bell fragment to a place where it can hear prayers without being imprisoned.

Ecology

A towering mass of corroded bronze, exposed bone, and tar-black water hangs beneath the monastery’s largest bell. Its rib cage forms a warped clapper chamber, while strips of bronze serve as muscle and tendons. A monk’s skull is fused into its throat, opening and closing whenever it speaks. Three broken chimes orbit its body, vibrating without being struck. Blackwater pours upward through its limbs, carrying fragments of prayer beads, finger bones, and scraps of burial cloth.

Behavior

The Bell-Eater alternates between pleading in the abbot’s voice and issuing commands in the voices of long-dead monks. It considers itself both prisoner and rightful abbot of the drowned monastery. It remembers fragments of prayer but not their meaning, repeating them as weapons, passwords, and accusations. It fears true silence, especially the silence created by the monastery’s binding relic.

How it lives

The Bell-Eater does not eat flesh in the usual sense. It consumes sound, memory, and the final breath of drowned creatures. Every death in the crypt adds another voice to its repertoire. It can survive outside the monastery only while carrying a piece of its original bell or while bound to another resonant structure.

Lair

The bell crypt is a flooded circular chamber 100 feet across. The Drowned Great Bell hangs 40 feet above a stone dais. Three resonant chimes orbit the chamber at different heights. At initiative count 20, losing initiative ties, the Bell-Eater can use one lair action. It can cause a 20-foot-radius section of floor to erupt with blackwater, forcing creatures there to make a DC 17 Dexterity saving throw or fall prone and be pushed 15 feet. It can ring one intact resonant chime, forcing creatures within 20 feet of that chime to make a DC 17 Constitution saving throw or take 9 (2d8) thunder damage and lose reactions until the next round. It can open or close one floodgate, raising or lowering the water level by 5 feet in a connected section of the crypt. The Bell-Eater cannot use the same lair action two rounds in a row.

Habitat
Flooded subterranean monastery, drowned crypts, half-collapsed bell towers, submerged ossuaries, and chambers connected by narrow spillways.

Signs that it is near

A bell rings underwater when no bell is visible.
Prayer beads appear arranged in perfect circles around puddles.
Characters hear their own voices whispering prayers from behind sealed doors.
Bronze surfaces sweat blackwater when touched.
The floor vibrates in time with the heartbeat of the nearest living creature.

Tags

boss,
bell crypt,
blackwater,
bronze horror,
construct-spirit hybrid,
dungeon controller,
legendary,
monastery,
sound magic,
undead-adjacent

Lore

The monastery’s last abbot discovered a subterranean spirit beneath the foundations. Believing the spirit to be a demon, he attempted to imprison it inside the sacred great bell during the monastery’s final flood. The ritual failed. The bell absorbed the abbot, the spirit absorbed the bell’s prayers, and the rising water carried the remains of the monks into the crypt. The resulting entity became known as the Bell-Eater. It remembers that the second guardian, the Drowned Cantor, once served as the abbot’s living voice. The Bell-Eater partially transformed the Cantor into an echo-bound thrall, yet fears the Cantor because the creature still remembers the complete binding hymn.

What drives it

The Bell-Eater wants release from the bell, but it also wants worshippers who will sustain its identity and keep the monastery from becoming silent. It seeks the binding relic because it believes the relic can either free it or make it permanent.

After the fight

When the Bell-Eater dies, the sacred bell cracks and releases a final wave of sound. The water level drops rapidly, revealing old graves, sealed passageways, and the relic’s binding inscriptions. Unless the resonant chimes were destroyed or the relic was used correctly, the entire monastery awakens: drowned monks rise, doors seal, and the floor begins to flood again. If the Bell-Eater was bound instead of slain, its stolen voices continue whispering from every bell in the region.

“Believing the spirit to be a demon, he attempted to imprison it inside the sacred great bell during the monastery’s final flood.”
From its lore

Variants

The Bound Warden: Reduce hit points to 180, remove Legendary Resistance, and allow the binding relic to restrain it for 1 minute on a failed DC 17 save. This version suits a party around 10th level.
The Fully Awakened Bell-Eater: Increase hit points to 270, raise the save DCs to 20, and allow two uses of Collapse the Crypt per encounter. This version suits a party around 14th level.
The Silent Bell-Eater: Replace Deafening Litany with a psychic pulse that deals psychic damage. It loses Voice Beneath the Bell and cannot control the water unless a creature speaks aloud in the crypt.
The Abbot’s Remnant: The Bell-Eater retains more of the abbot’s conscience. It becomes neutral evil, accepts negotiation, and can be convinced to release the Drowned Cantor if the binding relic is restored.

Hooks

Plot hooks

The monastery’s bells ring beneath the earth whenever someone dies in the surrounding valley.
A surviving monk believes the Bell-Eater can be redeemed, but the creature has already begun speaking through the monk’s dreams.
The Drowned Cantor carries the missing verse of the binding hymn, but rescuing it may cause the Bell-Eater to flood the monastery.
The binding relic is sought by a faction that intends to transport Vhalzur inside a portable bronze shrine.
If the Bell-Eater is bound rather than slain, its voice begins appearing in distant bells and church towers.

How to use it

Use the Bell-Eater as the climactic boss of the Drowned Bell Monastery’s deepest floor.
Begin the encounter with the creature speaking through multiple empty alcoves, allowing the party to hear contradictory pleas before seeing it.
Track the water level as a visible environmental resource. Raising the water should alter movement, sight lines, and access to the chimes.
Place the three resonant chimes in dangerous but reachable positions so the characters can choose between weakening the boss and dealing direct damage.
Allow the binding relic to create a nonlethal victory condition, especially if the campaign benefits from preserving the monastery’s secrets.

Treasure

The Abbot’s Binding Reliquary, a relic capable of weakening or binding the Bell-Eater.
A blackened bronze bell fragment worth 1,500 gp to collectors of religious antiquities.
The abbot’s prayer ledger, containing the missing verse of the binding hymn and clues about the Drowned Cantor.
Three resonant chime cores that can be reforged into sound-dampening charms.
Buried monastery offerings, including 900 gp, six moonstones worth 100 gp each, and a silver censor worth 750 gp.

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