Session Prep Bundledungeon-floor

Blood Drow

Recipe: Dungeon Floor

New
Contextual Narrative

The Sanguine Vaults of Undermyr

The air in the Undermyr is heavy, not with the usual damp of the deep earth, but with a metallic, copper tang that clings to the back of the throat. Pulsing veins of bioluminescent red ichor trace the architecture of the dungeon, following the natural cracks in the obsidian walls like a diseased nervous system. Here, the traditional web-work of the Drow has been replaced by glistening, wet strands of solidified gore that vibrate with a low, rhythmic thrum. Deep within the Sanguine Vaults, the sound of rhythmic chanting competes with the skittering of many-legged horrors. The floors are slick with ritual runoff, and the light is a perpetual, sickly crimson. You are standing in the birthplace of a new terror, where the elegance of the Elves has been subsumed by the hunger of the blood-ritual, and the spiders are no longer mere pets—they are extensions of the cult's own circulating life force.

High Priestess Valthara, House Valen'dros

Let the nectar of the weak feed the hunger of the many. In the blood of the fallen, we weave the future of our House.

Krevat the Crimson Guard
Enemy Presence

Krevat the Crimson Guard

A mutated Drider created through Drow blood magic rituals, serving as a biological tank and gatekeeper with translucent chitin and pressurized boiling blood.

TypeMonstrosity
HabitatUnderdark, Magical Vaults, The Undermyr
View
The Sanguine Broodmother
Enemy Presence

The Sanguine Broodmother

A massive, wall-anchored spider creature born from drow blood magic, acting as a biological factory for vampiric spiderlings.

TypeMonstrosity
HabitatThe Birthing Pits of Undermyr
View
Vessel of the Ritual
Enemy Presence

Vessel of the Ritual

A Drow noble mutated by a failed blood magic ritual, transformed into a semi-arachnid horror suspended in a living web of pulsing veins.

TypeMonstrosity
HabitatUnderdark, specifically the Undermyr chambers.
View
Crimson Swarm
Enemy Presence

Crimson Swarm

A magical alarm system composed of thousands of ruby-colored spiders that consume blood and vibrate in resonance with the dungeon's energy.

TypeSwarm
HabitatUnderdark, Drow Citadels, ventilation shafts, blood-magic laboratories.
View
High Priestess Valthara
Enemy Presence

High Priestess Valthara

A fanatical Drow visionary who has abandoned Lolth to pursue the evolution of her race through hemomancy and arachnid hybridization.

TypeHumanoid
HabitatUnderdark, Ritual Chambers, The Undermyr
View
The Cult of the Sanguine Web (House Valen'dros)
Faction

The Cult of the Sanguine Web (House Valen'dros)

The life is in the ichor; the ichor is in the web.

Neutral EvilAlignment
Hemomantic Drow SectType
View

Bundle Contents

06Items

Generated entities

Regional Effect

The Iron Pulse

The ritual heart in the center of the complex causes the blood of all living creatures to thrum in sync with its beat.

Mechanic

Creatures that take piercing or slashing damage bleed for an additional 1d4 necrotic damage at the start of their next turn.

Connections

High Priestess Valthara

LEADER_OFThe Cult of the Sanguine Web (House Valen'dros)

Krevat the Crimson Guard

PROTECTSHigh Priestess Valthara

The Sanguine Broodmother

BIRTHSCrimson Swarm

High Priestess Valthara

CREATEDVessel of the Ritual

The Sanguine Broodmother

CONNECTED_TOHigh Priestess Valthara

Quest Objectives

Destroy the Sanguine Font to stop the creation of new Blood Spiders.

The local infestation ceases, and the House Valen'dros presence is crippled.
The Blood Spiders spread to the surface, causing a regional plague of hematomancy-fueled attacks.

Rescue a high-ranking noble captive being drained to fuel the ritual.

A powerful political ally is gained, along with information about Drow movements.
The captive is transformed into a Vessel of the Ritual, forcing the players to slay them.