Spellcasting. The knight is an 8th-level spellcaster. Its spellcasting ability is Charisma (spell save DC 14, +6 to hit with spell attacks). It has the following paladin spells prepared:

Commander of Bones. As a bonus action, the knight can target one skeleton or zombie it can see within 30 feet of it. The target must make a DC 14 Wisdom saving throw. On a failed save, the target must obey the knight's commands until the knight dies or until the knight releases it as a bonus action. The knight can command up to twelve undead at a time this way.

Master of the Pallid Banner. While within 60 feet of the knight, any undead ally of the knight has advantage on saving throws against any effect that turns undead.