Sources
CR
Type
Size
Alignment
Movement

Soluun Xibrindas

Medium Humanoid (elf), Lawful Evil

Armor Class 18 (studded leather, shield)
Hit Points 84 (13d8 + 26)
Speed 30 ft.
STR
13
+1
DEX
18
+4
CON
14
+2
INT
11
+0
WIS
13
+1
CHA
14
+2
Saving Throws DEX +6, CON +4, WIS +3
Skills Perception +3, Stealth +8
Senses darkvision 120 ft., passive Perception 13
Languages Elvish, Undercommon
Challenge 4 (1,100 XP)

Traits

Fey Ancestry. Soluun has advantage on saving throws against being charmed, and magic can't put Soluun to sleep.

Gunslinger. Being within 5 feet of a hostile creature or attacking at long range doesn't impose disadvantage on Soluun's ranged attack rolls with a pistol. In addition, Soluun ignores Cover and Cover when making ranged attacks with a pistol.

Sunlight Sensitivity. While in sunlight, Soluun has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.

Equipment. Four packets of smokepowder and a pouch containing 20 pistol bullets

Boots of Elvenkind. Whilst wearing these boots Soluun's steps make no sound and he has advantage on any Dexterity (Stealth) checks that rely on moving silently.

Spellcasting

Innate Spellcasting. Soluun's spellcasting ability is Charisma. It can innately cast the following spells, requiring no material components:

At will: dancing lights

1/day each: darkness, faerie fire, levitate (self only)

Actions

Multiattack. Soluun makes two scimitar attacks.

Scimitar. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit:7 (1d6 + 4) slashing damage.

Poisonous Pistol. Ranged Weapon Attack: +6 to hit, range 30/90 ft., one target. Hit:9 (1d10 + 4) piercing damage plus 11 (2d10) poison damage.

Lore

Soluun is a sadistic, fanatical bully who is fiercely loyal to Bregan D'aerthe, and to Jarlaxle in particular. His younger brother, Nar'l, has infiltrated the Xanathar Guild. Soluun considers Nar'l a weakling who turned to arcane magic by way of compensation, and he has never had much faith in his brother or his abilities.