Booyahg Slave of the Great Old One

(Volo's Guide to Monsters)

Medium humanoid (any race), Any alignment

Armor Class12, 15 with mage armor
Hit Points91 (14d8 + 28)
Speed30 ft.
STRDEXCONINTWISCHA
9 (-1) 14 (+2) 15 (+2) 12 (+1) 12 (+1) 18 (+4)
Saving ThrowsCha +7, Wis +4
SkillsArcana +4, History +4
Damage Vulnerabilities—
Damage Resistancespsychic
Damage Immunities—
Condition Immunities—
Sensesdarkvision 60 ft., passive Perception 11
Languagesany two languages, telepathy 30 ft.
Challenge6

Traits

Whispering Aura.

At the start of each of the goblin's turns, each creature of its choice within 5 feet of it must succeed on a DC 15 Wisdom saving throw or take 10 (3d6) psychic damage, provided that the goblin isn't incapacitated.

Actions

Dagger.

Melee or Ranged Attack Roll: +5 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 4 (1d4 + 2) piercing damage.

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: detect magic, jump, levitate, mage armor (self only), speak with dead

1 each/day: arcane gate, true seeing

The goblin is a 14th-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: chill touch, eldritch blast, guidance, mage hand, minor illusion, prestidigitation, shocking grasp

Level 5 (3 slots): armor of Agathys, arms of Hadar, crown of madness, clairvoyance, contact other plane, detect thoughts, dimension door, dissonant whispers, dominate beast, telekinesis, vampiric touch