- 13 (10,000 XP)
Creature Sense. The neothelid is aware of the presence of creatures within 1.6 kilometers of it that have an Intelligence of −4 or higher. It knows the distance and direction to each creature, as well as each creature’s Intelligence, 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.
Maneuvers. The neothelid uses maneuvers (maneuver save DC 21). It has 18 stamina dice which are d8s, a dice limit of 4, regains all expended stamina dice when it finishes a long rest and regains half its total stamina dice when it finishes a short rest, and knows the following maneuvers:
Spellcasting. The neothelid is a 16th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 9, +1 to hit with spell attacks). It has 6 mana, a mana limit of 2, regains all expended mana when it finishes a long rest and regains half its total mana when it finishes a short rest, and knows the following spells:
At will: levitate
Tentacles. Melee Weapon Attack: +13 to hit, reach 4.5 m. 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 Reflex 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 Fortitude saving throw at the end of that turn or regurgitate all swallowed creatures, which fall prone in a space within 3 meters of the neothelid. If the neothelid dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 6 meters of movement, exiting prone.
Acid Breath (Recharge 5–6). The neothelid exhales acid in a 18-meters cone. Each creature in that area must make a DC 18 Reflex saving throw, taking 35 (10d6) acid damage on a failed save, or half as much damage on a successful one.