Carrera, the Jaune Primordial

Legendary Resistance (5/Day). If Carrera fails a saving throw, she can choose to succeed instead.

Abaddon, Lord of Destruction. Damage Carrera deals from her attacks ignore resistance to the damage. In addition, she gains the following abilities:

• Thought Acceleration. Carrera has advantage on ability checks and saving throws.
• Universal Sense. Carrera can sense magic as if it was the detect magic spell to a range of 120ft. 
• Multi-Dimensional Barrier. Carrera is always under the effect of the Globe of Invulnerability spell except it has a range of touch.
• Limit Break. Carrera can take two actions, only one of which can be the attack or cast a spell action.
• Dimensional Rupture. Attacks from Carrera can penetrate magical barriers such as the forcecage or mage armor spell.

Holy-Demonic Regeneration. At the start of her turn; if Carrera has at least 1 hit point, she regains 25 hit points unless she was hit by radiant or necrotic damage since her last turn.

Spiritual Attack Nullification. Carrera is immune to spells and effects that would harm or otherwise change her astral or ethereal body such as cutting her silver cord.

Devil Lord. If Carrera were to die in the Nine Hell's, she revives in 450 (10d100) years. 

Multiattack. Carrera attacks twice with her Longsword and once with her Golden Gun.

Golden Gun. Ranged Weapon Attack: +19 to hit, range of 60/240 ft., 1 target. Hit: 22 (3d8 + 10) force damage plus 12 (3d8) necrotic damage. Hit Points lost to this weapon’s damage can be regained only through a Short or Long Rest, rather than by regeneration, magic, or any other means. In addition Carrera heals equal to the necrotic damage taken.

Longsword. Melee Weapon Attack: +22 to hit, reach 5ft., 1 target. Hit: 17 (1d8 +13) slashing damage plus 12 (3d8) force damage. This weapon crits on an 18-20.

Gravity Collapse (Recharge 6). Carrera innately casts the ravenous void spell (Save DC 27) requiring no material components. The spell lasts for three rounds rather than its normal duration and does not require concentration.

Demon Lord's Haki. All creatures of Carrera's choice within 30ft of her must make a DC 26 Wisdom save or be frightened until the end of their next turn. Any creature below 25 hit points that fails this save is reduced to 0 hit points.

Spacial Motion. Carrera teleports to an unoccupied space she can see within 120ft of her.

Magic Canceler. When Carrera sees a creature cast a spell within 30ft of her, she can use her reaction to cause the creature to make a DC 19 Intelligence save. On a failed save, the creature's spell fails and the spell slot is expended if it used one.

Carrera 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. Carrera regains spent legendary actions at the start of her turn.

Attack. Carrera makes a melee attack against a creature. 

Nuclear Magic (Costs 2 Actions). Each creature in a 20-foot-radius sphere centered on a point Carrera can see with 120ft must make a DC 26 Dexterity saving throw. A target takes 24 (8d6) fire damage plus 24 (8d6) necrotic damage on a failed save, or half as much damage on a successful one.

Sandelphon's Judgement (Costs 2 Actions). Carrera makes a ranged weapon attack at a target with her Golden Gun. On a hit, the target has all magical effects or spells removed of them.