Special Traits

Creature Sense. The neothelid is aware of the presence of creatures within 120 feet of it that have an Intelligence score of 4 or higher. It knows the distance and direction to each creature, as well as each creature’s Intelligence score, but can’t sense anything else about it. A creature protected by a mind blank spell, a nondetection spell, or similar magic can’t be perceived in this manner.

Magic Resistance. The neothelid has advantage on saving throws against spells and other magical effects.

Actions

Multiattack. The neothelid makes three attacks-two with its tail and one with its tentacles. It can use its Psychic Blast or Acid Breath in place of its tentacles . Tail. Melee Weapon Attack: +12 to hit, reach 20 ft., one target. Hit: 20 (3d8 + 8) bludgeoning damage.

Tentacles. Melee Weapon Attack: +12 to hit, reach 15 ft., one target. Hit: 21 (3d8 + 8) bludgeoning damage plus 13 (3d8) psychic damage. If the target is a Large or smaller creature, it must succeed on a DC 18 Strength saving throw or be swallowed by the neothelid. A swallowed creature is blinded and restrained, it has total cover against attacks and other effects outside the neothelid, and it takes 35 (10d6) acid damage at the start of each of the neothelid’s turns. If the neothelid takes 30 damage or more on a single turn from a creature inside it, the neothelid must succeed on a DC 18 Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, which fall prone in a space within 10 feet of the neothelid. If the neothelid dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 20 feet of movement, exiting prone.

Psychic Blast (recharge 3):. The neothelid emits psychic energy in a 15-foot radius centered on itself. Each creature in that area must succeed on a DC17 Intelligence saving throw or take 36 (8d8+4) psychic damage and be stunned for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Acid Breath (Recharge 3). The neothelid exhales acid in a 60-foot cone. Each creature in that area must make a DC 18 Dexterity saving throw, taking 35 (10d6) acid damage on a failed save, or half as much damage on a successful one.

Legendary Actions

Gorgon Sewer Neothelid 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. Gorgon Sewer Neothelid regains spent legendary actions at the start of its turn.

Cast:. confusion, telekinesis, catapult, levitate.

Move:. The Neolithid can move up to it's full movement speed as long as it is not restrained or paralyzed.