Neogi Great Old Master

Huge aberration, lawful evil

Armor Class 19 (layer of neogi hatchling bodies)

19 (layer of neogi hatchling bodies) Hit Points 323 (34d10 + 136)

323 (34d10 + 136) Speed 20 ft., climb 20 ft.

STR DEX CON INT WIS CHA 14 (+2) 12 (+1) 18 (+4) 6 (-2) 12 (+1) 15 (+2)

Saving Throws Constitution +9, Wisdom +6

Constitution +9, Wisdom +6 Skills Intimidation +7, Perception +6

Intimidation +7, Perception +6 Damage Immunities poison

poison Condition Immunities poisoned

poisoned Senses darkvision 60 ft., passive Perception 16

darkvision 60 ft., passive Perception 16 Languages Common, Deep Speech, Undercommon

Common, Deep Speech, Undercommon Challenge 16 (15,000 XP)

Legendary Resistance (3/Day). If the neogi fails a saving throw, it can choose to succeed instead.

Death Birth. When the neogi great old master dies, it explodes into a shower of gore, dead neogi hatchlings, and venom. Every creature within a 30 foot radius of the great old master must make a DC 17 Dexterity saving throw, taking 14 (4d6) bludgeoning damage and 14 (4d6) poison damage on a failed save, or half as much on a successful one. After a great old master explodes, 2d4 well-fed neogi hatchlings emerge from its corpse, appearing in spaces within 5 feet of the corpse.

Mental Fortitude. The neogi has advantage on saving throws against being frightened, and is immune to being charmed. Magic can't put the neogi to sleep.

Nutrient Rich. If a neogi hatchling hits the neogi great old master with a bite attack, the hatchling regains 9 (2d4 + 4) hit points. It then becomes a well-fed neogi hatchling for 1 minute, if it wasn't already one. Any hit point loss suffered by one form is retained in the other. This trait is active even if the great old master is dead.

Spider Climb. The neogi can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Actions

Multiattack. The neogi makes two attacks: one with its bite and one with its claws.

Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) piercing damage plus 14 (4d6) poison damage, and the target must succeed on a DC 17 Constitution saving throw or become poisoned for 1 minute. A target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 7 (2d4 + 2) piercing damage.

Lob Hatchling. Ranged Weapon Attack: +6 to hit, range 30/60 ft., one creature. Hit: 4 (1d6 + 1) bludgeoning damage. Hit or Miss: A well-fed neogi hatchling appears in a space within 5 feet of the target.

Spew (Recharges 5-6). The neogi great old master expels neogi hatchlings and poison from its body in a 30-foot cone. All creatures in that cone must make a DC 17 Dexterity saving throw, taking 14 (4d6) bludgeoning damage and 14 (4d6) poison damage on a failed save, or half as much damage on a successful one. 2d4 well-fed neogi hatchlings appear in spaces within the cone.

Reactions

Burst Open. If the neogi great old master takes damage, the great old master can spawn 1d4 well-fed neogi hatchlings in spaces of its choosing within 5 feet of it. Every creature within 5 feet of the great old master takes 3 (1d6) poison damage.

Legendary Actions

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

Direct Hatchling. The neogi great old master makes a neogi hatchling that it can see perform a bite attack.

Lob Hatchling. The neogi makes a lob hatchling attack.