Armor of Shadows. Razzix’s base AC is 15.

Legacy of Dis. Razzix knows the thaumaturgy cantrip. He can also cast disguise self and detect thoughts each once per long rest (spell save DC 20)

Infernal Constitution. Razzix has advantage on saving throws against poison, and he is immune to disease.

Font of Magic. Razzix has a pool of 20 sorcery points that he can spend for a variety of abilities. He regains all expended sorcery points when he finishes a long rest, or 4 sorcery points whenever he finishes a short rest.

Spellcasting. Razzix is an 20th-level spellcaster. His spellcasting ability is Charisma (spell save DC 20, +12 to hit with spell attacks). Razzix has the following spells prepared.

Cantrips (at will): chill touch, despoil, mage hand, minor illusion, prestidigitation, shocking grasp[/spell], 

1st level (4 slots): shadow cloud, shield, silvery barbs

2nd level (3 slots): darkness, misty step, shadow blade

3rd level (3 slots): counterspell, enemies abound, call shadows, fly

4th level (3 slots): dimension door

5th level (3 slots): enervation

6th level (2 slots): journey in shadow

7th level (2 slots): power word pain

8th level (1 slot): abi-dalzim’s horrid wilting

9th level (1 slot): power word kill

Subtle Spell. Razzix can spend 1 sorcery point to cast a spell without verbal or somatic components.

Heightened Spell. Razzix can spend 3 sorcery points to give a target of a spell he casts disadvantage on its first saving throw against that spell.

Careful Spell. When Razzix casts a spell that would force one or more of his allies to make a saving throw, he can spend 1 sorcery point to cause up to 6 of those allies to automatically succeed on their save.

Strength of the Grave. When damage reduces Razzix to 0 hit points, he can make a Charisma saving throw (DC is 5 + the damage taken). On a success, he instead drops to 1 hit point. Razzix can’t use this trait if he is reduced to 0 hit points by radiant damage or by a critical hit. After he succeeds, he can’t use this trait again until he finishes a long rest.

Shackle of the Shadows (1/Day). Razzix can undergo a 1-minute ritual in which he attempts to shackle a creature within 15 feet of him that is cursed, diseased, or poisoned. The target must succeed on a DC 20 Charisma saving throw at the end of the ritual or become shackled. While shackled, the creature can take no actions against Razzix and must obey his instructions to the best of their ability, with no ability to misinterpret his command. Additionally, the sclera of the creature’s eyes become solid black.

Unusual Nature. Razzix is immune to any effect that would force him to unwillingly change shape or plane of existence. He also doesn’t require air.

Legendary Resistance (3/Day). When Razzix fails a saving throw, he can choose to succeed instead.

Special Equipment. Razzix has and is attuned to a ring of protection, suit of gleaming, glasses of object reading, and earrings of obscurement.

Eyes of the Dark. Razzix spends 2 sorcery points to cast darkness without expending a spell slot. When he does, he and up to 6 creatures he chooses can see normally in the darkness created by the spell.

Chill Touch. Ranged Spell Attack: +12 to hit, range 120 ft., one target. Hit: 18 (4d8) necrotic damage, and the target can’t regain hit points until the start of Razzix‘s next turn. If it’s an undead, it also has disadvantage on attack rolls against Razzix until the start of its next turn.

Shocking Grasp. Melee Spell Attack: +12 to hit, reach 5 ft., one target. Hit: 18 (4d8) lightning damage and the target can’t take reactions until the start of its next turn. Razzix has advantage on this attack if the target is wearing metal armor.

Quickened Spell. Razzix spends 2 sorcery points to cast a spell that has a casting time of 1 action.

Hound of Ill Omen. Razzix spends 3 sorcery points to summon a Medium dire wolf with 10 temporary hit points that counts as a monstrosity instead of a beast. The hound targets one creature Razzix can see within 120 feet of him when he uses this bonus action. It appears in an unoccupied space Razzix chooses within 30 feet of its target and has its own initiative. On its turn, it can move only toward its target by the most direct route, and it can use its action only to attack its target. The hound can make opportunity attacks, but only against its target. Additionally, while the hound is within 5 feet of the target, the target has disadvantage on saving throws against any spell Razzix casts. The hound disappears if it is reduced to 0 hit points, if its target is reduced to 0 hit points, or after 5 minutes.

Umbral Form. Razzix spends 6 sorcery points to gain a shadowy form for 1 minute or until he becomes incapacitated or dies, or if he uses a bonus action to end it. In this form, Razzix has resistance to all damage except force and radiant damage, and he can move through other creatures and objects as if they were difficult terrain. Razzix takes 5 force damage if he ends his turn inside an object.

Spellspinner. Razzix spends a spell slot to regain sorcery points equal to the spell slot’s level. Alternatively, Razzix can spend 2 sorcery points to gain a spell slot of 1st level, 3 for a slot of 2nd level, 5 for a slot of 3rd level, 6 for a slot of 4th level, or 7 for a slot of 5th level.

Shadow Walk. While in dim light or darkness, Razzix magically teleports up to 120 feet to an unoccupied space he can see that is also in dim light or darkness.

Razzix 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. Razzix regains spent legendary actions at the start of his turn.

Cantrip. Razzix casts a cantrip.

Shadow Step. Razzix uses his Shadow Walk.

Focus (Costs 2 Actions). Razzix concentrates the Shadows into his magic, regaining either a spell slot of up to 5th level or 3 sorcery points.