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Root-Tangle Hulk

The Root-Tangle Hulks were first woven during the War of the Severed Branch. The druids realized that normal wooden golems were too vulnerable to fire, so they bred a specific strain of fire-reactive fungus to grow within the vines, creating a defensive mechanism that turns an attacker's flame into a tactical disadvantage.

Monsters
Large plant · CR 5 · Rare

Root-Tangle Hulk

An ancient druidic guardian composed of compressed thorns and necrotic vines acting as a living hive for rot-grubs.
AC16
HP114/114
CR5
Init
STR
DEX
CON
INT
WIS
CHA
ConditionsNone

Combat

AC 16 · HP 114 · CR 5

Root-Tangle Hulk

Large plant (none), unaligned
Armor Class16 (natural armor)
Hit Points114 (12d10 + 48)
Speed
30 ft. walk
STR
DEX
CON
INT
WIS
CHA
Saving ThrowsConstitutionStrength
SkillsAthleticsPerceptionStealth
Damage Resistances
Bludgeoning and Piercing from non-magical attacks
Immunities
Charmed,
Frightened,
Exhaustion
Weaknesses
Fire (triggers Cinder Cloud)
Senses
Blindsight 60 ft. (blind beyond this radius),
Passive Perception 14
Languages
understands Druidic but cannot speak
Challenge5
Proficiency Bonus+3
False Appearance. While the hulk remains motionless, it is indistinguishable from a normal mound of forest debris or a tangled root system.
Grub Carrier. The hulk carries a Swarm of Rot-Grubs inside its rib-cage. When the hulk is reduced to 0 hit points, or if it takes more than 20 damage in a single turn, the swarm emerges in an unoccupied space within 5 feet of the hulk and acts on its own initiative. While inside the hulk, the swarm has total cover.
Cinder Cloud. When the hulk takes fire damage, it does not take double damage; instead, it releases a 20-foot-radius cloud of choking ash. The area is heavily obscured until the end of the hulk's next turn. Any creature that starts its turn in the cloud must succeed on a Constitution saving throw or be Poisoned until the end of its next turn.

Actions

Multiattack. The hulk makes two Slamming Vine attacks. It can replace one of these attacks with a Constrict attack if it has a target grappled.
Slamming Vine. Melee Weapon Attack: to hit, reach 15 ft., one target. Hit: 14 () bludgeoning damage plus 3 () piercing damage. If the target is a Medium or smaller creature, it is grappled (escape ). The hulk has two vines, each of which can grapple one target.
Constrict. The hulk crushes a creature it is currently grappling. The target must make a Strength saving throw, taking 22 () bludgeoning damage on a failure, or half as much on a success. The target remains restrained.

Reactions

Root Trip. When a creature the hulk can see moves out of a space within 15 feet of it, the hulk can cause roots to erupt. The creature must succeed on a Strength saving throw or fall prone and have its speed reduced to 0 until the start of its next turn.
Role
Area Denial Brute
Built for
5

Gear

  • Ancient Druidic Fetish (Wondrous Item, 250 gp)A small wooden idol carved from the hulk's heartwood.

Feats

Sentinel

Notes for the game master

The Hulk's Blindsight relies on vibrations and magical resonance; it is not affected by magical darkness.
Fire damage should be tracked carefully as it alters the battlefield visibility.

Tactics

  1. Opening

    The Hulk starts the fight perfectly still, waiting for at least two party members to enter its 15-foot reach before unleashing a Multiattack to grapple two different targets.

  2. Mid-fight

    It prioritizes using Constrict on grappled targets. If attackers use fire, it uses the resulting Cinder Cloud to hide its position while continuing to crush its restrained victims.

  3. End of the fight

    If reduced to below 30 HP, it stays in place, acting as a meat shield for the Swarm of Rot-Grubs that will eventually spill out to finish the job.

  4. Retreat

    The Hulk is a mindless construct of nature; it never retreats and fights until it is reduced to a pile of ash and mulch.

How it fights

Use the 15-foot reach to strike past the frontline at casters.
Drag grappled targets into the space of the 'Swarm of Rot-Grubs' once they emerge.
Use Root Trip to prevent squishy targets from escaping the Cinder Cloud.

Who it attacks first

Targets wearing metal armor (seen as an affront to nature).
Creatures dealing fire damage (to trigger the defensive ash cloud).
The smallest/weakest looking creature to ensure a successful Constrict.

Works well with

Violet Fungus: The Hulk's reach can pull enemies into the fungus's rot touch range.
Swarm of Rot-Grubs: The Hulk provides a safe transport and then holds victims still for the grubs to infest.

How to beat it

Dispel Magic: Casting at 5th level can stun the Hulk for 1 round.
Blight Spell: Deals maximum damage and can bypass the non-magical resistance.

Ways to avoid a fight

A player wearing Druidic vestments or speaking Druidic may attempt a DC 20 Animal Handling or Persuasion check to pass peacefully.
Offering a rare organic nutrient (like Giant Bug meat) might distract it for 1d4 rounds.

Ecology

A towering, seven-foot-tall mass of blackened, knotted roots and flexible briars forced into a crude humanoid shape. Its chest cavity is an open cage of thick bark ribs where a carpet of white, pulsing rot-grubs writhe in moist soil. It lacks a true head, instead possessing a crown of jagged thorns and several glowing, sap-colored fungal eyes scattered across its shoulders.

Behavior

The hulk remains perfectly still, resembling a pile of deadwood until intruders cross a specific druidic boundary. It then attacks with slow, relentless force, focusing on crushing the life out of one victim at a time to provide fresh meat for its internal swarm.

How it lives

This creature is a synthetic lifeform created by ancient druidic rites. It exists in a symbiotic loop: the hulk kills intruders, and the Swarm of Rot-Grubs living within its chest breaks down the organic matter into a nutrient-rich slurry that feeds the hulk's vines.

Lair

The Hulk typically stands at narrow stone archways or between giant mushrooms, where its 15-foot reach can span the entire corridor.

Habitat
Ancient forests, druid groves, overgrown ruins, and fungal caverns.

Signs that it is near

Massive humanoid tracks made of pressed mud and twigs
Skeletonized remains of forest animals covered in tiny bore holes
A faint, sickly-sweet smell of rotting vegetation and ozone
Patches of 'Viper Vine' that twitch when approached

Tags

Guardian,
Nature,
Hazardous

Lore

The Root-Tangle Hulks were first woven during the War of the Severed Branch. The druids realized that normal wooden golems were too vulnerable to fire, so they bred a specific strain of fire-reactive fungus to grow within the vines, creating a defensive mechanism that turns an attacker's flame into a tactical disadvantage.

What drives it

To prevent any non-druidic life from passing into the inner sanctums of the forest.

After the fight

Once defeated, the Hulk collapses into a pile of rotting mulch. If the Swarm of Rot-Grubs is not also destroyed, they will infest the surrounding area, turning the once-sacred site into a hive of decay within weeks.

Variants

Elder Root-Tangle: CR 8, Huge size, can grapple four targets.
Blight-Kissed Hulk: Deals extra necrotic damage and the Cinder Cloud inflicts levels of exhaustion.

Hooks

Plot hooks

The forest path to the Sunken Temple is blocked by a 'walking thicket' that has claimed three scouts.
A druid circle has lost control of their temple guardian after it was 'infected' by a swarm of necrotic grubs.

How to use it

The Guardian of the Fungus Gate.
A trap disguised as a fallen log across a narrow forest path.

Treasure

Inside its chest cavity, among the grubs, is a 'Ring of Animal Influence'.
The heartwood can be harvested to create a 'Staff of the Woodlands' (requires high level crafting).

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