Sources
CR
Type
Size
Alignment
Movement

Booyahg Slave of the Fiend

Small Humanoid (goblinoid), Any alignment

Armor Class 12, 15 with mage armor
Hit Points 78 (12d8 + 24)
Speed 30 ft.
STR
10
+0
DEX
14
+2
CON
15
+2
INT
12
+1
WIS
12
+1
CHA
18
+4
Saving Throws WIS +4, CHA +7
Skills Arcana +4, Deception +7, Persuasion +7, Religion +4
Damage Resistances slashing, from nonmagical attacks not made with silvered weapons
Senses darkvision 60 ft., passive Perception 11
Languages any two languages (usually Abyssal or Infernal), Goblin
Challenge 7 (2,900 XP)

Traits

Dark One's Own Luck (Recharges after a Short or Long Rest). When the goblin makes an ability check or saving throw, it can add a d10 to the roll. It can do this after the roll is made but before any of the roll's effects occur.

Nimble Escape. <$title_short_name$> can take the Disengage or Hide action as a bonus action on each of its turns.

Spellcasting

Innate Spellcasting. The goblin's innate spellcasting ability is Charisma. It can innately cast the following spells (spell save DC 15), requiring no material components:

At will: alter self, false life, levitate (self only), mage armor (self only), silent image

1/day each: feeblemind, finger of death, plane shift

Spellcasting. The goblin is a 17th-level spellcaster. Its spellcasting ability is Charisma (spell save DC 15, +7 to hit with spell attacks). It regains its expended spell slots when it finishes a short or long rest. It knows the following warlock spells:

Cantrips (at will): eldritch blast, fire bolt, friends, mage hand, minor illusion, prestidigitation, shocking grasp

1st–5th level (4 slots): banishment, burning hands, flame strike, hellish rebuke, magic circle, scorching ray, scrying, stinking cloud, suggestion, wall of fire

Actions

Mace. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit:3 (1d6) bludgeoning damage plus 10 (3d6) fire damage.

Lore

Spellcasters of any sort among the goblins are rare. Goblins typically lack the intelligence and patience needed to learn and practice wizardry, and they fare poorly even when given access to the necessary training and knowledge. Sorcerers are less prevalent among them than in many other races, and Khurgorbaeyag seems to dislike sharing his divine power with his followers. And although many goblins would readily offer anything to have the abilities of a warlock, the patrons that grant such…