Crimson Specter Knight

Commander of the Damned. As a bonus action, the knight can target one skeleton, ghost, 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.

Annointed by the Weave. Due to the nature of their being, all weapon attacks count as magical weapon attacks.

The Final March. These creatures are spirits either dragged or coerced back into service by a sinister power. These creatures function as ghosts and are immune to the afflictions of the living, but are greatly affected by the blights of the dead.

Master of the BloodyBanner. While within 60 feet of the knight, any undead ally of the knight has advantage on saving throws against any effect that turns undead. They also have advantage on attack throws.

Spellcasting. The knight is an 8th-level spellcaster. Its spellcasting ability is Charisma (spell save DC 14, +7 to hit with spell attacks). It has the following paladin spells prepared:

1st level (4 slots): command, compelled duel, hellish rebuke, wrathful smite, fire bolt

2nd level (3 slots): branding smite, crown of madness, darkness, find steed, magic weapon, magic missile, true strike

Multiattack. The knight attacks twice with one of its weapons.

Greatsword. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 15 (3d6 + 4) slashing damage.

Longbow. Ranged Weapon Attack: +6 to hit, range 150/600 ft., one target. Hit: 8 (1d8 + 5) piercing damage.