Control Darkness. As a bonus action, The King in the Shadows can cause all areas of darkness within 100 feet to move up to 10 feet.

Innate Spellcasting. The King in the Shadows' innate spellcasting ability is Charisma (spell save DC 19, +11 to hit with spell attacks). He can innately cast the following spells, requiring no somatic or material components:

1/day each: demiplane, heal

Legendary Resistance (3/day). If The King in the Shadows fails a saving throw, he can choose to succeed instead.

Magic Weapons. The King in the Shadows' weapon attacks are magical, and deal an extra 7 (2d6) radiant damage (included below).

[b]Control Darkness.[/b] As a bonus action, The King in the Shadows can cause all areas of darkness within 100 feet to move up to 10 feet.

[b]Innate Spellcasting.[/b] The King in the Shadows' innate spellcasting ability is Charisma (spell save DC 19, [+11] to hit with spell attacks). He can innately cast the following spells, requiring no somatic or material components:

At will: [spell]continual flame[/spell], [spell]detect evil and good[/spell], [spell]invisibility[/spell] (self only), [spell]moonbeam[/spell] (reskinned to shadowbeam), [spell]zone of truth[/spell]
3/day each: [spell]blight[/spell], [spell]counterspell[/spell], [spell]dispel magic[/spell]
1/day each: [spell]demiplane[/spell], [spell]heal[/spell]

[b]Legendary Resistance (3/day).[/b] If The King in the Shadows fails a saving throw, he can choose to succeed instead.

[b]Magic Weapons.[/b] The King in the Shadows' weapon attacks are magical, and deal an extra 7 ([2d6]) radiant damage (included below).

Actions

Multiattack. The King in the Shadows makes three attacks with either his obsidian staff or his shadow bolt

Obsidian Staff. Melee Weapon Attack: +9 to hit, reach 5 ft., one creature. Hit: 7 (1d8+3) bludgeoning damage plus 7 (2d6) radiant damage. A target that is struck by the staff two or more times in one turn must succeed on a DC 17 Constitution saving throw or be stunned until the end of it's next turn.

Shadow Bolt. Ranged Spell Attack: +11 to hit, range 150/600 ft., one target. Hit: 22 (4d10) radiant damage. If the target is a creature in a form other than its natural form, it takes an additional 22 (4d10) radiant damage and must succeed on a DC 19 Charisma saving throw or revert to its natural form. When the shadow bolt hits a target, darkness consumes a 10-foot radius from that point. The darkness is stationary and lasts until the end of The King in the Shadows' next turn.

Fearful Shadows (Recharge 5-6). The King in the Shadows magically animates the shadows of all foes within 60 feet of himself. The animated shadows attack the creatures who cast them. All affected creatures in the area take 35 (10d6) necrotic damage, or half damage with a successful DC 19 Dexterity saving throw. A creature that fails the saving throw also loses 1d4 points from its Strength score. A creature reduced to 0 Strength is unconscious until it regains at least 1 point of Strength. Strength lost to fearful shadows returns when the creature finishes a short or long rest.

Summon Devil (1/Day). The King in the Shadows magically summons a lunar devil (reskinned as a shadow devil). The summoned devil appears in an unoccupied space within 60 feet of its summoner, acts as an ally of its summoner, and can’t summon other devils. It remains for 10 minutes, until its summoner dies, or until its summoner dismisses it as an action.

Reactions

Shadow Slip. The King in the Shadows takes on the quality of his manifest delusions when he is targeted by an attacker he can see. He becomes nearly insubstantial, so that the attack roll is made with disadvantage. If the attack hits, The King in the Shadows takes half damage.

[b]Multiattack.[/b] The King in the Shadows makes three attacks with either his obsidian staff or his shadow bolt

[b]Obsidian Staff.[/b] Melee Weapon Attack: [+9] to hit, reach 5 ft., one creature. Hit: 7 ([1d8+3]) bludgeoning damage plus 7 ([2d6]) radiant damage. A target that is struck by the staff two or more times in one turn must succeed on a DC 17 Constitution saving throw or be stunned until the end of it's next turn.

[b]Shadow Bolt.[/b] Ranged Spell Attack: [+11] to hit, range 150/600 ft., one target. Hit: 22 ([4d10]) radiant damage. If the target is a creature in a form other than its natural form, it takes an additional 22 ([4d10]) radiant damage and must succeed on a DC 19 Charisma saving throw or revert to its natural form. When the shadow bolt hits a target, darkness consumes a 10-foot radius from that point. The darkness is stationary and lasts until the end of The King in the Shadows' next turn.

[b]Fearful Shadows (Recharge 5-6).[/b] The King in the Shadows magically animates the shadows of all foes within 60 feet of himself. The animated shadows attack the creatures who cast them. All affected creatures in the area take 35 ([10d6]) necrotic damage, or half damage with a successful DC 19 Dexterity saving throw. A creature that fails the saving throw also loses [1d4] points from its Strength score. A creature reduced to 0 Strength is unconscious until it regains at least 1 point of Strength. Strength lost to fearful shadows returns when the creature finishes a short or long rest.

[b]Summon Devil (1/Day).[/b] The King in the Shadows magically summons a lunar devil (reskinned as a shadow devil). The summoned devil appears in an unoccupied space within 60 feet of its summoner, acts as an ally of its summoner, and can’t summon other devils. It remains for 10 minutes, until its summoner dies, or until its summoner dismisses it as an action.

---
[b][i]Reactions[/i][/b]

[b]Shadow Slip.[/b] The King in the Shadows takes on the quality of his manifest delusions when he is targeted by an attacker he can see. He becomes nearly insubstantial, so that the attack roll is made with disadvantage. If the attack hits, The King in the Shadows takes half damage.