Blood Frenzy. Ludzig has advantage on melee attack rolls against any creature that is charmed or below its hit point maximum.

Charming Bite. When Ludzig hits a creature with his bite attack, it must make a DC 16 Constitution saving throw. On a failed save, the creature takes 3 (1d6) additional poison damage per point of damage inflicted by the bite and becomes charmed for 24 hours or until it takes damage from Ludzig or his allies. While charmed in this way, the creature views Ludzig as a trusted ally and is unwilling to attack him.

Master of the Pack. Ludzig can communicate telepathically with any vampyre within 120 feet of him and can issue commands to them as a bonus action.

Regeneration. Ludzig regains 20 hit points at the start of his turn if he has at least 1 hit point and isn’t in sunlight or running water. If Ludzig takes radiant damage or damage from holy water, this trait doesn’t function until the start of his next turn.

Sunlight Sensitivity. While in sunlight, Ludzig has disadvantage on attack rolls and ability checks.

Multiattack. Ludzig makes three attacks: two with his claws and one with his bite.

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) slashing damage.

Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one willing, charmed, or grappled creature. Hit: 9 (1d10 + 4) piercing damage plus 9 (2d8) necrotic damage.

Gaze of Domination (Recharge 5–6). Ludzig targets one creature he can see within 30 feet. The target must succeed on a DC 16 Wisdom saving throw or be charmed for 1 minute. While charmed, the creature obeys Ludzig’s verbal commands to the best of its ability. The target can repeat the saving throw at the end of each of its turns, ending the effect on a success.

Ludzig 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. Ludzig regains spent legendary actions at the start of his turn.

Move. Ludzig moves up to his speed without provoking opportunity attacks.

Claw Attack. Ludzig makes one claw attack.

Vampyric Glare (Costs 2 Actions). Ludzig forces a creature within 30 feet of him that can see him to make a DC 16 Wisdom saving throw. On a failed save, the creature is frightened of him for 1 minute. A frightened creature can repeat the saving throw at the end of its turns, ending the effect on a success.