Vines Of Nemthyr

The large humanoid form emerging from the treeline reveals itself to not be humanoid at all but a shambling of thick, ropy vines. Within the intertwined plants are bits of armor, broken weapons, and bleached bones.

Born of Blood and Battle. Vines of Nemthyr are born at the sites of bloody battles, where two armies leave the ground seeping with ichor and littered with the tools of war. As the plant life in the area soaks up both the physical remains and the psychic trauma of the deadly battle, vines of Nemthyr arise.

A Walking Mass Grave. When the vines have soaked up enough death, they can merge into a single creature made of entwined vines, leafy plants, dangerous thorns, and blood-red flowers. This creature also incorporates the remnants of the battle that formed it: fragments of sundered armor, bloodied weapons, severed limbs, broken bones, rotting flesh, etc. To the untrained eye, this amalgam often looks like an undead monstrosity rather than a plant.

A Relentless Hunger. The vines of Nemthyr, once formed, has one driving motivation: feed on further carnage. It seeks out sites of mass battles, and, if it can’t find those, it seeks out living creatures in the hopes of creating its own carnage to feast upon. While the vines of Nemthyr does not drink blood directly, it does gain nourishment from planting its roots in blood-soaked soil.

Vines of Nemthyr

Large plant, neutral evil
Armor Class 15 (natural armor)
Hit Points 133 (14d10 + 56)
Speed 30 ft., burrow 30 ft.
19 (+4) 12 (+1) 19 (+4) 5 (-3) 13 (+1) 5 (-3)

Saving Throws Str +7, Con +7
Skills Perception +4, Survival +4
Damage Resistances cold, poison
Condition Immunities blinded, deafened, frightened, poisoned
Senses blindsight 60 ft., passive Perception 14
Challenge 8 (3,900 XP)

Dispersal. As a bonus action, the vines of Nemthyr can separate itself into a group of distinct vines. While separated in this way, the vines can move through spaces as narrow as 3 inches wide. The separated vines can’t attack while in this state, but they can reform into the vines of Nemthyr as a bonus action.

False Appearance. While the vines of Nemthyr remains motionless, it is indistinguishable from a normal plant.

Magic Resistance. The vines of Nemthyr has advantage on saving throws against spells and other magical effects.


Multiattack. The vines of Nemthyr makes three attacks: two with its slam and one with its thorny lash.

Slam. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) bludgeoning damage.

Thorny Lash. Melee Weapon Attack: +7 to hit, reach 15 ft., one target. Hit: 15 (2d10 + 4) slashing damage, and the target is grappled (escape DC 15). Until this grapple ends, the target is restrained. The vines of Nemthyr has two thorny lashes, each of which can grapple only one target.

Thorn Spray (Recharge 6). The vines of Nemthyr shoots poisonous thorns in a 30-foot cone. Each creature in that area must make a DC 15 Constitution saving throw, taking 35 (10d6) poison damage on a failed save, or half as much damage on a successful one.

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