Moss-Heart - AI-generated fantasy Hazard

Moss-Heart

The Moss-Heart is a parasitic fungal entity that serves as a central nervous system for mindless husks in the vicinity. It pulses with a dim, rhythmic green light and smells of wet earth and rot.

Hazard EntryEnvironmentalLevel1Simple

Moss-Heart

1LevelUncommonRarityCavernEnvironment
MagicalPlantEnvironmental
Level1
|
HP15
|
AC13
|
TypeEnvironmental
|
ComplexitySimple
|
RarityUncommon

Defenses

AC13
Hard0
HP15
BT 7
Fort+DC 12 (Strength Saving Throw)
Ref+N/A
Will+N/A
Immune
Psychic, Poison, Prone, Charmed, Frightened
Resist
Bludgeoning, Piercing
Weak
Fire
MagicalPlantEnvironmental

Detection

PerDC 12
StlDC 12 (to distinguish it from normal cavern moss)
Init20

A dense, fibrous lump of emerald moss roughly the size of a humanoid heart. It is connected to the cavern floor by thick, vein-like tendrils that pulse with a faint light.

Standard Engagement

Trigger

The Moss-Heart activates when a creature moves within 20 feet of it or when the heart takes damage.

Routine

On initiative count 20 every 4th round after activation, the Moss-Heart releases a concentrated burst of spores that animates a nearby corpse or clump of plant matter into a Moss-Husk (use Zombie statistics).

Reset

The Moss-Heart remains active until destroyed or until no living creatures have been within 60 feet of it for 1 hour.

Spore Pulse

When the Moss-Heart is first triggered, all creatures within 10 feet must succeed on a DC 11 Constitution saving throw or be poisoned for 1 minute. A poisoned creature can repeat the save at the end of each of its turns.

Husk Animation

Every 4 rounds, a new Moss-Husk rises from the floor within 15 feet of the heart. These husks act on the heart's initiative and defend the core.

Vitality Connection

When the Moss-Heart is reduced to 0 hit points, all Moss-Husks currently active within 120 feet of it are instantly destroyed as their magical life force is severed.

Feedback Loop

If Silas is present and bonded to the Moss-Heart, he is stunned until the end of his next turn when the Moss-Heart is destroyed due to the sudden psychic feedback.

Description

The Moss-Heart is a parasitic fungal entity that serves as a central nervous system for mindless husks in the vicinity. It pulses with a dim, rhythmic green light and smells of wet earth and rot.

Discovery

A DC 12 Wisdom (Perception) check identifies the source of a low, rhythmic thumping sound echoing off the cavern walls.

Archival Lore

Cave-dwelling shamans often nurture Moss-Hearts to guard their sanctums, bonding the plants to mindless servants to create a tireless, undying guard.

Environment
Cavern
Theme
Fungal Parasitism
Creator
Nature or Primitive Shamanism
Purpose
Sentience-leeching guardian and necro-parasitic source.
Game System
D&D 5E
Art Style
Dark, atmospheric illustration with heavy focus on emerald bioluminescence, wet cavern textures, and organic root systems.
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