Family: Yugoloth

Medium fiend (yugoloth), neutral evil

Armor Class 17 (natural armor)
Hit Points 105 (14d8 + 42)
Speed 30 ft., fly 30 ft.

12 (+1) 22 (+6) 16 (+3) 16 (+3) 16 (+3) 16 (+3)

Saving Throws Dex +10, Int +7, Cha +7
Skills Deception +7, Intimidation +7, Perception +7, Stealth +14, Persuasion +7
Damage Vulnerabilities radiant
Damage Resistances acid; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities cold, necrotic, poison
Condition Immunities charmed, exhaustion, frightened, grappled, paralyzed, petrified, poisoned, prone, restrained
Senses darkvision 60 ft., passive Perception 17
Languages Abyssal, Common, Infernal, void Speech
Challenge 10 (5,900 XP)


  • Incorporeal Movement. The viridriloth can move through other creatures and objects as if they were difficult terrain. It takes 5 (1d10) force damage if it ends its turn inside an object.
  • Stand in the Shadow. A viridriloth standing within 5 feet of another creature gains advantage on Stealth checks as it hides within the other creature’s shadow.


  • Multiattack. The viridriloth makes two attacks, but it can use its Drain Will only once.
  • Claw. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 13 (2d6 + 6) slashing damage plus 4 (1d8) necrotic damage.
  • Drain Will. The viridriloth saps the willpower of a creature within 30 feet of it. The target must make a DC 16 Wisdom saving throw. On a failure, the target takes 28 (8d6) psychic damage, and the target’s Wisdom score is reduced by 1d4. The target dies if this reduces its Wisdom to 0. Otherwise, the reduction lasts until the target finishes a short or long rest.
  • Possession (Recharge 6). One humanoid that the viridriloth can see within 10 ft. of it must succeed on a DC 16 Charisma saving throw or be possessed by the viridriloth; the viridriloth then disappears, and the target is incapacitated and loses control of its body. The viridriloth now controls the body but doesn’t deprive the target of awareness. The viridriloth can’t be targeted by any attack, spell, or other effect, except the banishment spell and similar effects, and it retains its alignment, Intelligence, Wisdom, Charisma, and immunity to being charmed and frightened. It otherwise uses the possessed target’s statistics but doesn’t gain access to the target’s knowledge, class features, or proficiencies. The possession lasts until the body drops to 0 hit points, the viridriloth ends it as a bonus action, or the viridriloth is banished or forced out by an effect like the dispel evil and good spell. When the possession ends, the viridriloth reappears in an unoccupied space within 5 ft. of the body. The target is immune to this viridriloth’s Possession for 24 hours after succeeding on the saving throw or after the possession ends.


Difficult to distinguish from th1 surrounding gloom, this sinuous creature seems little more than a shadow, though one moving independently of anything casting it. Only in moments of movement can its true form be visualized, outlining its draconic wings, piercing emerald eyes, and elongated claws.

Viridriloths are yugoloth spies and taskmasters, lording their knowledge over all beneath them.

Lurking Terror. Viridriloths prefer to hide in darkness or within the cloaking presence of underlings?f shadows. Especially crafty beings, they use their natural abilities to act as spies, saboteurs, and manipulators. Occasionally they grow tired of the more subtle schemes and simply kill outright, blaming others for their brutal slayings.

Corporeal Envy. Viridriloths envy their corporeal brethren and as such are prone to be brutal taskmasters of lesser yugoloths.

That envy is multiplied tenfold toward non-yugoloths-and particularly mortals.

Viridriloths delight in possessing mortals and indulging their cruelty while masked in mortal flesh.

The Edge of Gnosis. Near the middle of the yugoloth religious hierarchy, though not yet initiated into the higher mysteries reserved for more powerful yugoloths, viridriloths lord their presumed secret knowledge over lesser yugoloths. This belies a profound insecurity and hunger for understanding, both qualities intentionally stoked by higher castes to increase their usefulness and urge them toward promotion.

Section 15: Copyright Notice

Warlock Grimoire 4. ©2023 Open Design LLC. Authors: Lou Anders, Wolfgang Baur, HH Carlan, Robert Fairbanks, Basheer Ghouse, Richard Green, Tim Hitchcock, Jeremy Hochhalter, Victoria Jaczko, Rajan Khanna, Sarah Madsen, Ben McFarland, Jonathan Miley, Kelly Pawlik, Sebastian Rombach, Adam W. Roy, Paul Scofield, Amber Stewart, Brian Suskind, Mike Welham.

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