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High Priestess Valthara - AI-generated fantasy Monster

High Priestess Valthara

Once a high ranking priestess of Lolth, Valthara claimed to have found the 'True Pattern' in the blood of the first spiders. She was exiled from Menzoberranzan for her heresy but found refuge in the Undermyr. There, she discovered the ancient hemomantic properties of the deep marshes, using them to create the first Blood Spiders and binding her followers to her will via blood oaths.

Monsters
Medium humanoid · Hard/Deadly · Unique

High Priestess Valthara

A fanatical Drow visionary who has abandoned Lolth to pursue the evolution of her race through hemomancy and arachnid hybridization.
AC18
HP172/172
CRHard/Deadly
Init
STR
DEX
CON
INT
WIS
CHA
ConditionsNone

Combat

AC 18 · HP 172 · Hard/Deadly

High Priestess Valthara

Medium humanoid (elf (drow)), neutral evil
Armor Class18 (Living Silk Raiment)
Hit Points172 (23d8 + 46)
Speed
30 ft. walk,
30 ft. climb (Spider Climb)
STR
DEX
CON
INT
WIS
CHA
Saving ThrowsConstitutionWisdomCharisma
SkillsArcanaMedicineReligionInsight
Damage Resistances
Necrotic,
Poison
Immunities
Charmed
Weaknesses
Sunlight Sensitivity
Senses
Superior Darkvision 120 ft.,
Passive Perception 15
Languages
Abyssal,
Common,
Elvish,
Undercommon
ChallengeHard/Deadly
Proficiency Bonus+5
Blood Web Walker. Valthara ignores movement restrictions caused by webbing. While she is touching her webs, she knows the exact location of any other creature in contact with the same web.
Sanguine Vitality. Whenever Valthara deals necrotic damage to a creature with a blood-based attack, she regains hit points equal to half the damage dealt.
Fey Ancestry. Valthara has advantage on saving throws against being charmed, and magic can't put her to sleep.

Spells

Blight (level 4, necromancy). Deals necrotic damage to a creature within 30 feet.
Hold Person (level 2, enchantment). Paralyzes a humanoid target.
Cloudkill (level 5, conjuration). Creates a 20 foot radius sphere of poisonous red fog.
Misty Step (level 2, conjuration). Teleports 30 feet to an unoccupied space she can see.

Actions

Multiattack. Valthara makes two attacks with the Heart-Sheath or uses Sanguine Puppetry and makes one attack.
Heart-Sheath. Melee Weapon Attack: to hit, reach 5 ft., one target. Hit: 5 () piercing damage plus 18 () necrotic damage. The target must succeed on a Constitution saving throw or have their movement speed reduced by 10 feet until the start of Valthara's next turn as their blood thickens.
Sanguine Puppetry. Valthara targets one creature she can see within 60 feet that has at least one drop of blood. The target must succeed on a Strength saving throw or be moved up to 20 feet in a direction of Valthara's choice. If the target hits a wall or another creature, it takes 14 () bludgeoning damage.
Blood Mist Burst (Recharge 5-6). Valthara exhales a cloud of crimson mist in a 30-foot cone. Each creature in that area must make a Constitution saving throw, taking 45 () necrotic damage on a failed save, or half as much on a successful one. Creatures that fail are also Blinded until the end of their next turn.

Reactions

Silk Riposte. When a creature misses Valthara with a melee attack, she can use her reaction to have her living robes lash out. The attacker must succeed on a Dexterity saving throw or be Restrained by red silk (escape ).

Legendary Actions

Hemostatic Command. Valthara commands the blood within a creature restrained by her webs or silk. The target takes 10 necrotic damage, and Valthara regains 10 hit points.
Spider Leap. Valthara moves up to her speed without provoking opportunity attacks. She must end this movement on a wall or ceiling.
Coagulate (Costs 2 Actions) (costs 2 actions). Valthara targets a creature she can see within 30 feet. The blood in the creature's limbs begins to harden. The target must succeed on a Constitution saving throw or be Paralyzed until the end of its next turn.
Role
Final Boss, Spellcaster
Built for
11

Gear

  • Heart-Sheath (Magic Weapon, Legendary)A +2 dagger that converts half of all damage dealt into healing for the wielder.
  • Living Silk Raiment (Magic Armor, Very Rare)Robes that provide an AC of 15 + Dex mod and grant resistance to nonmagical bludgeoning, piercing, and slashing damage.

Feats

War Caster
Spell Sniper

Augmentations

Subdermal Blood Reservoirs: Increases hit points by 30 (already included).

Notes for the game master

Valthara should always have at least two Blood Spiders present in her ritual chamber to act as tanks.
She uses Sanguine Puppetry to drag healers or casters into the melee reach of her guards.

Tactics

  1. Opening

    Valthara starts by casting Cloudkill (styled as a blood mist) to divide the party, then uses her legendary action Spider Leap to position herself on the ceiling.

  2. Mid-fight

    She focuses on using Sanguine Puppetry to throw characters into the surrounding webs, following up with Heart-Sheath attacks on paralyzed or restrained targets.

  3. End of the fight

    If reduced below 50 hit points, she uses Blood Mist Burst every chance she gets, becoming more reckless and shouting about the 'Evolution of the Vein'.

  4. Retreat

    Valthara does not retreat. If she dies, she attempts to trigger a final blood explosion as her robes dissolve.

How it fights

Utilize vertical space; the ritual chamber has high ceilings with many web strands.
Prioritize targets with high physical health to maximize her Sanguine Vitality healing.
Use Silk Riposte early to discourage melee attackers from staying close.

Who it attacks first

Clerics or Paladins (their radiant magic disrupts her blood flow).
Fighters or Barbarians (easily manipulated via Sanguine Puppetry).
Wizards (priority for Silence or Cloudkill placement).

Works well with

Blood Spiders: They can use 'Sanguine Bind' which grants Valthara advantage on attacks against the bound target.
Drow Blood-Mages: They can use their own hit points to fuel Valthara's spell save DC.

How to beat it

Radiant damage reduces her healing for one turn.
Spells that create strong wind can disperse her Blood Mist Burst early.
Lesser Restoration can end the movement reduction from her dagger.

Ways to avoid a fight

Players might convince her that her ritual is mathematically flawed, requiring a DC 25 Arcana check.
A Drow character could attempt to challenge her for leadership of the sect through a blood-duel.

Ecology

Valthara is an imposing Drow of exceptional height. She is clad in the Living Silk Raiment: robes of pulsing, translucent fibers that flow like fresh blood across her obsidian skin. Her eyes glow with a dull, crimson light, and she carries the Heart-Sheath, a ritual dagger crafted from a single giant spider fang encased in a glass-like coagulated blood.

Behavior

Valthara is cold, clinical, and terrifyingly calm. She speaks of her atrocities as necessary biological milestones. She does not scream in anger but sighs in disappointment when her enemies prove 'genetically stagnant.'

How it lives

Valthara has engineered a new food chain in the Undermyr. She feeds her Blood Spiders on the essence of her enemies, creating a cycle of arcane predation that bypasses the traditional reliance on Lolth's favor.

Lair

The Heart of the Undermyr: A humid, crimson-lit cathedral where massive webs act as conduits for rivers of sacrificial blood flowing toward a central altar.

Habitat
Underdark, Ritual Chambers, The Undermyr

Signs that it is near

Skeins of red, sticky silk coating the cave walls.
The rhythmic, heartbeat-like thumping echoing through the rock.
Drained corpses of subterranean beasts preserved in translucent cocoons.
A heavy, metallic scent of iron and ozone in the air.

Tags

Drow,
Hemomancer,
Leader

Lore

Once a high ranking priestess of Lolth, Valthara claimed to have found the 'True Pattern' in the blood of the first spiders. She was exiled from Menzoberranzan for her heresy but found refuge in the Undermyr. There, she discovered the ancient hemomantic properties of the deep marshes, using them to create the first Blood Spiders and binding her followers to her will via blood oaths.

What drives it

To complete the Sanguine Ascension, a ritual that will transform every Drow in her sect into a more powerful, blood-drinking spider hybrid.

After the fight

With Valthara's death, the Blood Spiders lose their cohesion and turn on each other. The Undermyr ritual chamber begins to flood as the hemomantic pumps fail, potentially creating a race against time to escape.

“She was exiled from Menzoberranzan for her heresy but found refuge in the Undermyr.”
From its lore

Variants

Lich Valthara: If she completes her ritual, she may return as a Drider-like Undead Lich.
Spider Queen Vessel: Valthara becomes a medium for a blood-aspected avatar of Lolth.

Hooks

Plot hooks

Missing villagers have been found drained of blood, leading to a network of red spider webs in the basement.
A loyalist Lolthite house hires the party to assassinate Valthara, fearing her 'new way' will strip them of their power.
A strange red fog is rising from the well in a surface town, bringing small, aggressive spiders with it.

How to use it

The culminating fight of an Underdark campaign centered on Drow politics.
The boss of a dungeon crawl through the Undermyr.

Treasure

The Heart-Sheath dagger.
A vial of 'Original Blood' (counts as a Potion of Superior Healing and a Potion of Giant Strength).
Architectural plans for a spider-shaped fortress.

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