Myconid Sovereign

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Medium Plant, Neutral

Armor Class 16 (natural armor)

Hit Points 84 (12d8+24)

Speed 30 ft.

STR 14 (+2)

DEX 12 (+1)

CON 15 (+2)

INT 16 (+3)

WIS 18 (+4)

CHA 14 (+2)

Saving Throws Int +6, Wis +7

Skills Insight +6, Perception +6

Damage Resistances slashing; piercing

Damage Immunities poison, psychic

Condition Immunities blinded, deafened, frightened, paralyzed, petrified, poisoned

Senses darkvision 60 ft., passive Perception 16

Languages Undercommon, Sylvan, telepathy 120 ft.

Challenge 5 (1,800 XP) Proficiency Bonus +3

Legendary Resistance (3/Day). If the Myconid Sovereign fails a saving throw, it can choose to succeed instead.

Spores of Command. As an action, the Myconid Sovereign can release a cloud of spores in a 30-foot radius. Each creature in that area must succeed on a DC 16 Constitution saving throw or be affected by the *command* spell for 1 minute.

Mycelium Network. The Myconid Sovereign can communicate telepathically with other myconids within 1 mile that share the same mycelium network.

Innate Spellcasting. Myconid Sovereign's spellcasting ability is Wisdom (spell save DC 15, +7 to hit with spell attacks). It can innately cast the following spells, requiring no material components:

1/day each: greater restoration, confusion

3/day each: hold person, gentle repose

At will: detect magic, entangle

Actions

Multiattack. The Myconid Sovereign makes two spore melee attacks.

Spore Blast. Melee weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 15 (2d10+4) necrotic damage. The target must succeed on a DC 15 Constitution saving throw or be poisoned until the end of its next turn.

Fungal Growth. The Myconid Sovereign creates a 10-foot radius area of difficult terrain that lasts for 1 minute. Creatures moving through this area must succeed on a DC 15 Dexterity saving throw or take 3d6 poison damage.

Legendary Actions

The Myconid Sovereign can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. The Myconid Sovereign regains spent legendary actions at the start of its turn.

Spore Cloud. The Myconid Sovereign releases a cloud of magical spores, forcing creatures within 15 feet to make a DC 15 Constitution saving throw or become incapacitated until the end of their next turn.

Spread Mycelium. The Myconid Sovereign can move to an adjacent mycelium network location.

Command Spores (Costs 2 Actions). The Myconid Sovereign uses its Spores of Command ability again.

Lair

Regional Effects

The region containing the creature's lair is warped by its magic, creating the following effects:

Plants within 1 mile of the lair exhibit unusual growth patterns and colors.
The air is thick with spores, causing respiratory distress for non-plant creatures.
Creatures that die within 1 mile of the lair are absorbed into the mycelium network.

If the Myconid Sovereign dies, these effects fade over the course of 1d10 days.

Environment Underdark

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Lore & Description

Appearance

The Myconid Sovereign stands at nearly 6 feet tall, its cap a vibrant shade of deep green flecked with bioluminescent spots. Its body is covered in a mottled texture resembling ancient bark, and tendrils of mycelium snake from the base of its form into the ground.

Behavior & Origins

Myconid Sovereigns serve as leaders within the myconid community, often acting as guardians of their subterranean realms. They are wise and benevolent, though they fiercely protect their kin from intruders. Myconid Sovereigns commune with the earth and the fungi, maintaining harmony within the depths of the Underdark.

Monster Image

Generation Info

Original prompt:
"A myconid sovereign of the underdark"

Created: Jan 28, 2026
Modified: Jun 1, 2026