Nalfeshnee
Large Fiend
Armor Class 18
Hit Points 184 (16d10+96)
Speed fly +30, walk +20
Challenge 13
Saving Throws cha +8, con +11, int +10, str +10, wis +8
Damage Resistances cold, fire, lightning; damage from nonmagical weapons
Damage Immunities poison
Condition Immunities poisoned
Senses truesight 120 ft., passive Perception 13
Languages Abyssal, telepathy 120 ft.
Special Abilities
Chaotic Evil. The nalfeshnee radiates a Chaotic and Evil aura.
Magic Resistance. The nalfeshnee has advantage on saving throws against spells and magical effects.
Actions
Multiattack. The nalfeshnee makes a bite attack and a claws attack.
Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 32 (5d10 + 5) piercing damage. If it uses its bite on a dead non-demon creature it regains 27 (5d10) hit points and recharges its Horror Nimbus. It may gain this benefit only once per creature.
Claws. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 31 (4d12 + 5) slashing damage.
Chaos Blast. Beams of multicolored light arc through a 15-foot-radius sphere centered on a point within 90 feet. Each creature in the area that does not have a Chaotic alignment makes a DC 16 Wisdom saving throw taking 52 (8d12) force damage on a failure or half damage on a success.
Bonus Actions
Horror Nimbus (1/Day). The nalfeshnee glows with an unholy, multicolored radiance. Each creature within 15 feet of the nalfeshnee that can see it makes a DC 16 Wisdom saving throw. On a failure, a creature is frightened for 1minute. A creature repeats the saving throw at the end of each of its turns, ending the effect on itself on a success.
Teleport. The nalfeshnee magically teleports up to 120 feet to an unoccupied space it can see.
Source: Level Up Advanced 5e Monstrous Menagerie · OGL/Open