Twilight Dreadnought of the Sunken Secrets

Emerging from the depths of forgotten oceans, this creature is a fusion of shadow and aquatic elegance. Cloaked in a flowing garment of darkness, it appears as a silhouette flickering in and out of existence. Its elongated limbs end in delicate, webbed appendages that smooth its movements, while bioluminescent patches pulse along its body, casting an eerie glow in the surrounding darkness. When it emerges, its haunting voice echoes the fears of its victims, warping reality itself. It hunts by slipping into the minds of adventurers, sowing doubt and confusion amongst them. This entity represents both the allure and terror of the secrets that lie beneath the waves and the twilight realm it governs.


Armor Class: 15 (natural armor)
Hit Points: 112 (15d10 + 30)
Speed: 30 ft., swim 60 ft.

STR DEX CON INT WIS CHA
14 (+2) 18 (+4) 14 (+2) 16 (+3) 15 (+2) 20 (+5)

Saving Throws: Dex +7, Int +6, Cha +8
Skills: Stealth +7, Insight +5, Deception +8
Damage Resistances: Psychic, Radiant
Condition Immunities: Frightened, Charmed
Senses: Darkvision 60 ft., Truesight 30 ft., passive Perception 12
Languages: Deep Speech, Common, understands Aquan but cannot speak it
Challenge: 7 (2,900 XP)
Proficiency Bonus: +3

TRAITS
Twilight Veil: The creature can become intangible, allowing it to slip through solid objects. As a bonus action, it can become incorporeal until the start of its next turn. In this form, it cannot take damage, but it also cannot make attacks or interact with objects.

Mindshatter Voice: The creature can use an action to unleash a haunting wail in a 30-foot cone. Each creature in that area must succeed on a DC 16 Wisdom saving throw or take 22 (4d10) psychic damage and be frightened until the end of their next turn. On a successful save, they take half damage and are not frightened.

Abyssal Secrets: Once per turn, when the creature hits a creature with an attack, it may manipulate the target's mind. The target must succeed on a DC 16 Intelligence saving throw or gain vulnerability to all damage types until the start of the creature's next turn.

ACTIONS
Multiattack: The creature makes two attacks: one with its Shadow Strike and one with its Wave of Secrets.

Shadow Strike: Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 18 (3d10 + 2) necrotic damage. If the target is frightened, it takes an additional 9 (2d8) psychic damage.

Wave of Secrets: A 30-foot line that is 5 feet wide erupts from the creature. Each creature in that line must make a DC 16 Dexterity saving throw. A creature takes 27 (6d8) force damage on a failed save, or half as much damage on a successful one. If a creature fails its saving throw, it also has disadvantage on its next attack roll or ability check before the end of its next turn.

LEGENDARY ACTIONS
The creature can take 3 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. The creature regains spent legendary actions at the start of its turn.

  • Conceal: The creature can use its Twilight Veil ability as a response to an attack, becoming incorporeal until the start of its next turn.
  • Haunting Echo: The creature forces one creature it can see within 60 feet to make a DC 16 Wisdom saving throw. On a failure, the target is frightened until the end of its next turn.
  • Shadow Step: The creature teleports up to 30 feet to an unoccupied space it can see. After it teleports, it can make one Shadow Strike attack as a part of this action.