Xavorr, Goddess of Envy

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

Spellcasting. Xavvor is a 9-level spellcaster. Its spellcasting ability is wisdom (spell save DC 20, +15 to hit with spell attacks). Xavvor has following wizard spells prepared:
Cantrips (at will): Fire Bolt

3rd level (3 slots): Fireball

4th level (3 slots)

5th level (3 slots)

6th level (2 slots)

7th level (2 slots)

8th level (1 slots) 

9th level (1 slots)

Heavenly Longsword. Melee Weapon Attack: +12 to hit, reach 5 ft., single target. Hit: 24 (2d12 + 12) slashing damage. 

All Seeing Eye: As a bonus action, until the end of their turn, the goddess gains advantage on attack rolls against one target of their choosing.

Divine Revelation (Costs 1 Reaction). If an attack roll succeeds against the goddess, she can use a reaction to make the roll fail instead.

Xavorr 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. Xavorr regains spent legendary actions at the start of its turn.

Divine Will (Costs 1 Action): The goddess channels her divine will and gains an extra attack.

Divine Protection (Costs 3 Action): Until there next turn, the all attacks against the goddess have disadvantage.