Anastrasya Karelova, Second Bride of Strahd

 Legendary Resistance (1/Day). If the vampire fails a saving throw, it can choose to succeed instead.

Regeneration. The vampire regains 20 hit points at the start of its turn if it has at least 1 hit point and isn't in sunlight or running water. If the vampire takes radiant damage or damage from holy water, this trait doesn't function at the start of the vampire's next turn.

Spellcasting. The vampire is a 11th-level spellcaster. Its spellcasting ability is Charisma (spell save DC 18, +10 to hit with spell attacks). The vampire has the following enchantment spells prepared:

1th level (4 slot): Charm Person

2th level (3 slot): Suggestion, Enthrall, Crown of Madness

3th level (3 slot): Incite Greed, Fast Friends

4th level (3 slot): Charm Monster, Dominate Beast

5th level (2 slot): Geas, Modify Memory, Dominate Person

6th level (1 slot): Mass Suggestion

Multiattack. (Vampire Form Only). The vampire makes two attacks, only one of which can be a bite attack.

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

Bite. (Bat or Vampire Form Only). Melee Weapon Attack: +8 to hit, reach 5 ft., one willing creature, or a creature that is grappled by the vampire, incapacitated, or restrained. Hit: 6 (1d6 + 3) 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. A humanoid slain in this way and then buried in the ground rises the following night as a vampire spawn under the vampire’s control.

Charm. The vampire targets one humanoid it can see within 30 feet of it. If the target can see the vampire, the target must succeed on a DC 18 Wisdom saving throw against this magic or be charmed by the vampire. The charmed target regards the vampire as a trusted friend to be heeded and protected. Although the target isn’t under the vampire’s control, it takes the vampire’s requests or actions in the most favorable way it can, and it is a willing target for the vampire’s bite attack.

Each time the vampire or the vampire’s companions do anything harmful to the target, it can repeat the saving throw, ending the effect on itself on a success. Otherwise, the effect lasts 24 hours or until the vampire is destroyed, is on a different plane of existence than the target, or takes a bonus action to end the effect.

Enthraller. Anastrasya indicates a task she would like completed. Any creatures charmed by her that can hear the command must succeed a Wisdom saving throw (DC 18) or use up their reaction attempting the task.

Captivating Presence. When Anastrasya is targeted by a melee attack, she can force the attacker to roll a Wisdom saving throw (DC 18). On a failed save, the attacking creature must choose a new target or lose the attack, additionally, they are considered charmed until the beginning of their next turn.

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

Move. Anastrasya moves her full speed, without triggering attacks of opportunity.

Charming Voice. Anastrasya commands a creature she has charmed to execute an action, which they do immediately.