Large Monstrosity, Neutral Evil
Armor Class 18 Natural Armour
Hit Points 250 (20d10 + 120)
Speed 30 ft., swim 60 ft.
STR
18 (+4)
DEX
24 (+7)
CON
22 (+6)
INT
14 (+2)
WIS
18 (+4)
CHA
16 (+3)
Saving Throws DEX +13, WIS +10, CHA +9
Damage Resistances Bludgeoning, Piercing, and Slashing from Nonmagical Attacks
Condition Immunities Charmed, Frightened
Senses Blindsight 30ft, Darkvision 120ft, Passive Perception 21
Languages Aquan, Common understands it but can't speak it Aquan, understands Common but can't speak
Challenge 20 (25,000 XP)
Proficiency Bonus +6
Traits

Evasion. If the Abyssal Trickster is subjected to an effect that allows it to make a Dexterity saving throw to take only half damage, it instead takes no damage if it succeeds on the saving throw.

Shadowy Presence. The Abyssal Trickster can manipulate shadows, giving it advantage on Dexterity (Stealth) checks in dim light or darkness.

Cunning Defense. When targeted by an attack, the Abyssal Trickster can use its reaction to impose disadvantage on the attack roll. If the attack misses, it can move up to half its speed without provoking opportunity attacks.

Lurker in the Deep. The Abyssal Trickster can take the Hide action as a bonus action while underwater or in dim light.

Actions

Multiattack. The Abyssal Trickster makes three attacks: two with its Tentacle and one with its Bite.

Tentacle. Melee Weapon Attack: +14 to hit, reach 15 ft., 1 target. Hit: 25 (3d10 + 7) [bludgeoning] damage. The target must succeed on a DC 20 Strength saving throw or be grappled (escape DC 20).

Bite. Melee Weapon Attack: +14 to hit, reach 5 ft., one grappled target. Hit: 30 (4d10 + 7) [piercing] damage.  The target is also blinded until the end of its next turn.

Taunting Laugh (Recharge 5-6). The Abyssal Trickster releases a haunting laugh. Each creature of its choice within 60 feet that can hear it must succeed on a DC 20 Wisdom saving throw or become incapacitated until the end of its next turn. A creature that succeeds on the save takes 27 (6d8) psychic damage.

Bonus Actions

Enter the description for how bonus actions work for your monster here.

Reactions

Reaction Name. Enter the description for your action.

Legendary Actions

The Abyssal Trickster 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 Abyssal Trickster regains spent legendary actions at the start of its turn.

Move (Costs 1 Actions). The Abyssal Trickster moves up to its speed without provoking opportunity attacks.
Shadow Step (Costs 1 Actions). The Abyssal Trickster teleports to an unoccupied space it can see within 60 feet that is in dim light or darkness.
Tentacle Strike (Costs 2 Actions). The Abyssal Trickster makes one Tentacle attack.

Mythic Actions

Enter the description for how mythic actions work for your monster here.

Mythic Action Name (Costs # Actions). Enter the description for your mythic action.

Description

 A cunning fish-like creature that lurks in the deep, shadowy trenches of the seas. It wields the uncanny ability to evade any assault, mundane or magical, with a taunting laugh.

Lair and Lair Actions

Enter a description of your monster's lair here.

Lair Actions

On initiative count # (losing initiative ties), the [monster name] takes a lair action to cause one of the following effects; the [monster name] can’t use the same effect two rounds in a row:

  • Tidal Wave. The waters in the lair surge violently. Each creature in a 20-foot radius sphere centered on a point the Abyssal Trickster can see must succeed on a DC 20 Strength saving throw or be knocked prone and pushed 15 feet away from that point.
  • Enter a description for a lair action.

Regional Effects

The region containing a legendary [monster name]’s lair is [enter the effect description], which creates one or more of the following effects:

  • Enter a regional effect description.
  • Enter a regional effect description.

If the [monster name] dies, these effects fade over the course of #d# days.

Tenseikamai_