Black Rider

Legendary Resistance (3/Day). If the Rider fails a saving throw, it can choose to succeed instead.

Turn Resistance. The Rider has advantage on saving throws against any effect that turns undead.

rider. The Rider has a special Horse, all other animals are frightened of the Rider, also, only the Rider can ride this Horse. 

Paralyzing gaze. Melee Spell Attack: +12 to hit, reach 5 ft., one creature. Hit: 10 (3d6) cold damage. The target must succeed on a DC 18 Constitution saving throw or be paralyzed for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

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

Paralyzing gaze. (Costs 2 Actions). The Rider uses its Paralyzing Touch.