Myodusa 묘두사

Huge monstrosity, neutral good

Armor Class 18 (natural armor)

Hit Points 168 (16d12 + 64)

Speed 40 ft., climb 30 ft., swim 30 ft.

STR 20 (+5) · DEX 16 (+3) · CON 18 (+4) · INT 14 (+2) · WIS 20 (+5) · CHA 18 (+4)

Saving Throws Dex +7, Con +8, Wis +9, Cha +8

Skills Insight +9, Medicine +9, Nature +6, Perception +9

Damage Resistances radiant; bludgeoning, piercing, and slashing from non-magical attacks

Condition Immunities charmed, diseased, frightened

Senses darkvision 120 ft., tremorsense 60 ft., passive Perception 19

Languages understands all Beast languages and Common; telepathy 120 ft. (beasts only)

Challenge 10 (5,900 XP)

Traits

Gentle Guardian. Myodusa never makes the first attack. A creature that deals damage to Myodusa for the first time in a combat must succeed on a DC 17 Wisdom saving throw or be marked by Regret for 1 minute (disadvantage on attack rolls against Myodusa while the blue aura is active).

Blue Healing Aura. A soft cobalt radiance surrounds Myodusa in a 20-foot radius. At the start of each of Myodusa’s turns each willing creature of Myodusa’s choice in the aura (including itself) regains 10 hit points and is cured of one disease or one poison. The aura is suppressed while Myodusa is unconscious or restrained.

Augury of Storms. Myodusa always knows the prevailing weather within 50 miles and has advantage on Wisdom (Survival) checks to predict natural disasters.

Beast Speech. Beasts can understand Myodusa’s telepathy and are predisposed to be friendly toward it. When Myodusa is reduced to half hit points or fewer, 2d4 swarms of ravens arrive at the start of its next turn and fight to protect it.

Innate Spellcasting. Myodusa’s spellcasting ability is Wisdom (spell save DC 17, +9 to hit with spell attacks). It can innately cast the following spells, requiring no material components:

At will: calm emotions (PHB, p.221/249), detect thoughts (PHB,p.231/262), speak with animals (PHB, p.277/318)

3/day each: cure wounds (4th-level), lesser restoration (PHB, p.255/291), pass without trace (PHB, p.264/303)

1/day each: control weather (PHB, p.228/257), greater restoration (PHB, p.246/281), mass cure wounds (PHB, p.258/296)

Actions

Multiattack. Myodusa makes two attacks: one with Bite and one with Tail.

Bite. Melee Weapon Attack: +9 to hit, reach 15 ft., one target. Hit: 22 (3d10 + 5) piercing damage plus 9 (2d8) radiant damage.

Tail. Melee Weapon Attack: +9 to hit, reach 20 ft., one target. Hit: 18 (3d8 + 5) bludgeoning damage, and the target must succeed on a DC 17 Strength saving throw or be knocked prone.

Azure Pulse (Recharge 5–6). Myodusa releases a wave of cerulean light in a 30-foot cone. Allies in the area regain 30 (6d8 + 3) hit points and end one condition of Myodusa’s choice (blinded, deafened, paralyzed, or stunned). Hostile creatures must make a DC 17 Constitution saving throw, taking 30 (6d8 + 3) radiant damage on a failed save, or half as much damage on a success.

Bonus Actions

Serpentine Dash. Myodusa moves up to half its speed without provoking opportunity attacks.

Reactions

Protective Coil. When a creature within 10 feet of Myodusa is hit by an attack, Myodusa can interpose its body, taking the damage instead. Damage transferred this way is halved.

Legendary Actions

Myodusa can take 2 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. It regains spent legendary actions at the start of its turn.

Detect. Myodusa makes a Wisdom (Perception) check.

Tail Attack. Myodusa makes one Tail attack.

Healing Flash (Costs 2 Actions). Myodusa activates its Blue Healing Aura an additional time.

Lore

A serpent with a cat-like head and gleaming scales. Communicates with animals

Do your best to protect Myodusa from the officials who are trying to wipe out every magical creature. You might have to face an armed unit of the regular army or negotiate with the bureaucrats themselves. The mission is simple: rescue this rare beast and keep its location a secret.

Myodusa (묘두사) literally means “cat-headed serpent.” Legends describe it as a massive snake covered in gleaming, gold-tinted scales, crowned with a head that looks strikingly like a cat’s—or a wildcat’s. Ancient texts say the creature is so large that the depths of its cave remain unexplored. They also claim it emits a blue energy—seen as light and smoke—that foretells natural disasters. But let’s start at the beginning.

From Korean Bestiary 5E, p. 82 · Fern Flower Press