rokurokubi

Elongate Neck. A rokurokubi can stretch her neck from a normal human length up to 20 feet. While her neck is retracted she looks human.

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

No Sleep. A rokurokubi does not need to sleep and is immune to all sleep effects.

Nightfall Aura. A rokurokubi can create an aura of darkness and silence (as the spells) with a radius of 15 feet. The rokurokubi is immune to the effects of her aura, and can activate or suppress this ability as a free action. These aura effects can be dispelled as if they were spells.

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

Innate Spellcasting. The rokurokubi’s spellcasting ability is Charisma (spell save DC 12). The rokurokubi can innately cast the following spells, requiring no material components:

• At will: animal friendship (snakes only)
• 3/day each: poison spray, suggestion

Spellcasting. The rokurokubi is a 9th-level spellcaster. Her spellcasting ability is Intelligence (spell save DC 16, +8 to hit with spell attacks). The rokurokubi has the following wu-jen spells prepared:

• Cantrips (at will): mage hand, prestidigitation, ray of frost
• 1st level (4 slots): comprehend languages, fog cloud, sleep
• 2nd level (3 slots): detect thoughts, gust of wind, mirror image
• 3rd level (3 slots): animate dead, bestow curse, nondetection
• 4th level (3 slots): blight, greater invisibility
• 5th level (1 slot): dominate person

Multiattack. The rokurokubi makes two attacks, only one of which can be a bite attack.

Katana. Melee Weapon Attack: +9 to hit, reach 5 ft., one creature. Hit: 8 (1d8 + 4) slashing damage. Instead of dealing damage, the vampire can grapple the target (escape DC 18).

Bite. Melee Weapon Attack:+9 to hit, reach 20 ft., one creature. Hit: 7 (1d6 + 4) piercing damage plus 10 (3d6) necrotic damage. The target’s hit point maximum is reduced by an amount equal to the necrotic damage taken, and the vampire regains hit points equal to that amount. The reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0. The target must make a DC 17 Charisma saving throw or become cursed.  While cursed the target is silenced (as the spell) and looses 1 Charisma point per day until they make a successful saving throw. The curse lasts until ended with a remove curse spell, or similar magic.  Charisma damage heals 1 point per day after the curse is lifted but the target remains silenced until all Charisma damage is fully healed. A creature reduced to 0 Charisma becomes unconscious until the curse is lifted or starves to death.

Constrict. Melee Weapon Attack: +9 to hit, reach 20 ft., one creature. Hit: 13 (2d8 + 4) bludgeoning damage, and the target is grappled (escape DC 18). Until this grapple ends, the creature is restrained, and the rokurokubi can’t constrict another target. While grappled the target automatically takes 13 (2d8 + 4) bludgeoning damage at the start of its turn.

Move. The rokurokubi moves up to its speed without provoking opportunity attacks.

Constrict. The rokurokubi makes one unarmed strike.

Bite.(Costs 2 Actions). The rokurokubi makes one bite attack.