– Multiattack

Action Type: Standard Action
Target: 1 creature

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

– Vampire Charm: The vampire targets one humanoid it can see within 5 tiles of it. If the target can see the vampire, the target must succeed on a DC 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.

The Charm Save would be the same as their Charisma bonus plus 10.