Archvile

Devil's Sight. Magical darkness doesn't impede the Archvile's darkvision.

Magic Resistance. The Archvile has advantage on saving throws against spells and other magical effects.

Mass Raise. The Archvile can cast Mass Healing Word as a bonus action twice per long rest.

Inate Spellcasting. The Archvile can cast the following spells inately without requiring components. It's spellcasting ability is Wisdom. Save DC 18

Darkness (at will)

Dispel Magic, Hold Person(3rd level), Spirit Guardians (3/day) 

Death Ward (self-cast each day), Banishment (2/day) 

Flame Strike. (1/day)

Inflict Pain. Melee Spell Attack: +10 to hit, reach 5 ft., one target. Hit: 25 (4d10+6) Necrotic damage.

Crippling Bolt. Ranged Spell Attack: +10 to hit, range 120 ft., one target. Hit: 14 (5d6) necrotic damage. The next attack roll made by the target has disadvantage.

Flame Wall. The Archvile uses its reaction to increase its AC by 5 to attacks from one cardinal or ordinal direction.

The Archvile has four legendary actions.

Firewalk (Costs 2 Actions). The Archvile forces all creatures within 10 feet of it to make a Constitution saving throw, taking 3d10 fire damage on a failed save, or half as much damage on a successful one. It then teleports itself to an unoccupied space withing 60 feet of its location.

Leeching Grasp. The Archvile makes a melee spell attack against a creature, dealing 2d6 necrotic damage on a hit. The Archvile can then spread half of the damage dealt as healing among allied creatures of his choice within 20 feet.

Attack. The Archvile uses Inflict Pain or Torturing Bolt.