Alekta

Angelic Burning Weapons: Alekta's weapon attacks are magical. When Alekta hits with any weapon, the weapon deals an extra 3d8 fire damage and 3d8 radiant damage (included in the attack).

Divine Awareness: Alekta knows if she is told a lie.

Innate Spellcasting: Alekta's spellcasting ability is Charisma (spell save DC 24). Alekta can innately cast the following spells, requiring no material components.

At will: detect evil and good, burning hands, greater restoration
3/day each: dispel evil and good, flame strike, resurrection
1/day each: commune, firestorm, earthquake, plane shift (self only)

Magic Resistance: Alekta has advantage on saving throws against spells and other magical effects.

Illumination: Alekta emits a bright light for up to a 120 ft radius, and a dim light in additional 120 ft; creatures within bright radius must succeed on a charisma saving roll (DC 18); if not, become blinded for 2 rounds; After 3 failed saves, becomes blind permanently.

Legendary Resistance: If Alekta fails a saving throw, she can choose to succeed instead. (only 3/day)

Multi-attack: Alekta makes 3 burning attacks with her sword

Bolt: ranged spell attack;  +15 to hit, range 600 ft, if hit creature takes 7d6 damage of the following choices: acid, cold, fire, force, lightning, radiant, or thunder.

Attack of Opportunity: When a hostile creature that Alekta can see leaves your range, Alekta may use one reaction to use a melee attack against the offending creature.

Alekta may take 3 legendary actions per day, at the end of each turn. Alektra regains spent legendary actions at the beginning of the next turn.

Peel of Thunder: Alekta unleashes a peel of thunder that can be heard up to 300 ft; Those in range of Alekta must make a con save thro (dc 16) and if failed take 4d6 damage

Psychic Projection (1 action):  Each creature within 60 feet of Alekta must make a DC 19 Wisdom saving throw, taking 2d10 + 4 psychic damage on a failed save, or half as much damage on a successful one.