Countess Ocheron

Legendary Resistance (5/day). If Countess Ocheron fails a saving throw, she can choose to succeed instead.

Magic Resistance. Countess Ocheron has advantage on saving throws against spells and other magical effects.

Curse - Doomed to Walk in this Mockery of Life. Countess Ocheron does not need to eat, drink, or sleep. She cannot die of age or disease.

Curse - Forever a Part of this World. Countess Ocheron’s existence is of such cosmic importance that reality itself decides that she remains, as well as her home. She and Mt. Celestia cannot be destroyed by any means, and even the mighty Wish spell cannot undo their creation or end their existence.

Curse - Morbidly Drawn to that Place I Called Home. If Countess Ocheron would be banished from the Material Plane by any effect and for any amount of time, she instead returns to Mt. Celestia and cannot leave there for 1d4 days.

Magic Soul. All of Countess Ocheron’s attacks are considered magical.

Good Posture is the Key. Countess Ocheron cannot use her flying speed until she activates her Exertion ability.

Ballroom Waltz. Any creature that rolls a 1 on an attack roll or saving throw against Countess Ocheron must make a DC 20 Dexterity saving throw or gain one level of exhaustion. Any creature that rolls a 20 has all levels of exhaustion removed.

Alert. Countess Ocheron has a +5 bonus to initiative. She also can't be surprised while conscious, and other creatures can't gain advantage on attack rolls against her as a result of being unseen by her.

War Caster. Countess Ocheron may make opportunity attacks by casting a spell instead of a regular attack. The spell must have a casting time of 1 action and must target only the creature that provoked the opportunity attack.

Unbreakable Will. Countess Ocheron doesn't need to maintain concentration on spells that normally require concentration, and can have multiple concentration spells active at a time. Those spells exist for their full duration, or until dispelled.

Burning Faith. Radiant damage dealt by Countess Ocheron cannot be reduced by resistance or immunity, or other methods such as the Evasion Class Feature. The radiant damage is still reduced by effects such as taking half damage on a successful saving throw for an ability or spell.

Apex Predator. Whenever Countess Ocheron reduces a creature’s hit points to zero, she regains one of her Legendary Actions and recharges either Bend the Knee or Throes of Grandeur. She can immediately make an attack after activating this ability. 

Divine Expulsion. If Countess Ocheron would die, she instead returns to Mt. Celestia where she spends 1d4 days recovering. While she is recovering, she has immunity to all damage and cannot be targeted by spells or other magical effects.

Innate Spellcasting. Countess Ocheron's spellcasting ability is Intelligence (spell save DC 23, +12 to hit with spell attacks). Countess Ocheron can innately cast the following spells, requiring no material components:
At will: True Resurrection, Scrying, Dispel Magic, Sacred Flame (4d8)
5/day each: Remove Curse, Sunburst, Dominate Monster
3/day each: Harm, Heal, Plane Shift
1/day each: Power Word Heal, Power Word Kill

Multiattack. Countess Ocheron makes three attacks using Sacred Flame, Beam of Radiance, her Bite, or her Claw in any combination. The chosen attacks can have different targets.

Bite. Melee Weapon Attack: +12 to hit, range 5 ft., one target. Hit: 2d6 piercing damage + 5d8 poison damage. The creature hit must make a DC 18 Constitution saving throw or take 4d4 psychic damage and be Poisoned. The poisoned creature can make a DC 18 Constitution saving throw at the end of each of their turns to remove the condition.

Claw. Melee Weapon Attack: +12 to hit, range 10 ft., one target. Hit: 4d6 slashing damage + 5d8 poison damage.

Beam of Radiance. Ranged Weapon Attack: +12 to hit, range 150/600 ft., one target. Hit: 5d10+10 radiant damage. If Divine Retaliation was activated, Countess Ocheron restores hit points equal to the damage dealt.

Aura of Silence. A dark purple mist encompasses a 30 ft. radius sphere centered on Countess Ocheron. Other creatures cannot restore hit points while inside the sphere, and other creatures that attempt to cast spells into the sphere or cast spells while inside the sphere must make a DC 20 Wisdom saving throw or take 4d4 psychic damage and fail to cast the spell.

Repelling Wave. A glowing wave emits from Countess Ocheron and extends into a 30 ft. radius sphere. Each creature in range must make a DC 20 Dexterity saving throw, taking 10d6 radiant damage and being pushed back up to 50 ft. away from Countess Ocheron on a failed save. Creatures that succeed take half damage and don't get pushed back. Using the Repelling Wave ends the Aura of Silence if it was active.

Exertion (1/day). This action cannot be taken if Countess Ocheron is above 600 hit points. Calling upon a storm of divine energy, Countess Ocheron becomes empowered and can make a Bite or Claw attack as a Bonus Action on each of her turns. She also unfurls her grey angelic wings and can use her flying speed.

Divine Authority (1/day). This action cannot be taken if Countess Ocheron is above 400 hit points. Countess Ocheron can call upon inexorable divine power to choose one of the following effects (any creature whose alignment is Lawful automatically succeeds the saving throw required for the chosen effect):
Return to Thy Creator. Each creature of Countess Ocheron's choice must make a DC 20 Wisdom saving throw. Each creature who failed has their alignment changed to Lawful Good and is magically teleported to Mt. Celestia.
Quell thy Fervent Hearts. Each creature of Countess Ocheron's choice must make a DC 20 Wisdom saving throw. Each creature who failed has all their hit points restored and all negative effects and diseases affecting them ended. They are then no longer hostile to Countess Ocheron or her allies, and cannot take hostile action for the next 1d4 years.
Lay Bare thy Life. Each creature of Countess Ocheron's choice must make a DC 20 Wisdom saving throw. Each creature who failed has their hit points reduced to zero, and they are now dying. If their hit points are restored after this effect, they do not regain consciousness immediately, and must be woken up.

Divine Retaliation (1/day). This action cannot be taken if Countess Ocheron is above 300 hit points. Exalted beams strike down at the Countess’s enemies in retaliation. Each creature of Countess Ocheron’s choice must make a DC 20 Wisdom saving throw or take radiant damage equal to their current hit points, or half that much on a successful save. Her Beam of Radiance now restores hit points equal to the damage it deals until the next dawn. She also regains all expended uses of her Innate Spellcasting and recharges her Bend the Knee and Throes of Grandeur abilities.

Bend the Knee (Recharge 5-6). Countess Ocheron chooses a creature she can see. They must make a DC 20 Charisma saving throw or take 4d4 psychic damage and be controlled by Countess Ocheron on their next turn. If this ability would reduce a creature’s hit points to zero, it instead reduces their hit points to one and that creature gains one level of exhaustion at the end of their next turn.

Throes of Grandeur (Recharge 5-6). Remembering back to her troublesome years of decadence, Countess Ocheron lets out screams of pain and sadistic glee. Up to three creatures that Countess Ocheron chooses must make a DC 20 Intelligence saving throw or take 4d4 psychic damage and be stunned until the end of their next turn. They take half that much damage on a successful save and are instead charmed until the end of their next turn.

Empty Light. Whenever an ally of Countess Ocheron is killed, she can use her reaction to cause that ally’s killer to make a DC 20 Charisma saving throw or take psychic damage equal to the total amount of damage that killed the ally, or half the much damage on a successful save.

Countess Ocheron 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. Countess Ocheron regains spent Legendary Actions at the start of her turn.

Bite. Countess Ocheron makes a Bite attack.

Claw. Countess Ocheron makes a Claw attack.

Beam of Radiance. Countess Ocheron makes a Beam of Radiance attack.

Repelling Wave. Countess Ocheron uses her Repelling Wave ability.

Spell. Countess Ocheron casts a spell with a casting time of 1 action.

Exertion (costs all available Legendary Actions). Countess Ocheron uses her Exertion ability, then may immediately fly a distance equal to her flying speed.

Divine Authority (costs all available Legendary Actions). Countess Ocheron uses her Divine Authority ability.

Divine Retaliation (costs all available Legendary Actions). Countess Ocheron uses her Divine Retaliation ability, then can immediately make one Beam of Radiance attack.

Bend the Knee (costs 2 Actions). Countess Ocheron uses her Bend the Knee ability. If the chosen creature failed their saving throw, and this Legendary Action was taken at the end of their turn, that creature immediately takes an additional turn.

Throes of Grandeur (costs 2 Actions). Countess Ocheron uses her Throes of Grandeur ability.