Yeenoghu

(a.k.a. "The Demon Prince of Gnolls")

Yeenoghu is one of the demonic lords of the Abyss who once roamed the Material Plane. He is a large, bestial, feral, angry demon. He is ever-hungering, ever wandering to conquer and devour, leaving destruction, fetid meat, and waves of yipping, angry hyenas to devour what was left behind in his wake.
Yeenoghu is the Demon Prince of gnolls and, though gnolls were first created when an unknown god entered Exandria to do battle during The Calamity and a pack of hyenas was caught in the divine eminence. Many gnolls pay homage to Yeenoghu.
Yeenoghu's might and clout don't compare to the likes of Orcus, but he controls a layer of the Abyss, Yeenoghu's Realm, where he hunts lesser demons while he schemes to conquer other layers opportunistically. Seeking the downfall of civilization, Yeenoghu sends gnoll servants and (rarely) other cultists to attack and destroy cities.

Yeenoghu CR: 24 (62,000 xp)

Huge fiend (demon), chaotic evil

Armor Class: 20

Hit Points: 333 (23d12 + 184)

Speed: 50 ft

STR

29 +9

DEX

16 +3

CON

26 +8

INT

16 +3

WIS

24 +7

CHA

15 +2

Saving Throws: Dex +10, Con +15, Wis +14

Skills: Intimidation +9, Perception +14

Damage Resistances: cold, fire, lightning

Damage Immunities: poison; bludgeoning, piercing, and slashing that is nonmagical

Condition Immunities: charmed, exhaustion, frightened, poisoned

Senses: truesight 120 ft., passive Perception 24

Languages: all, telepathy 120 ft.

Challenge Rating: 24 (62,000 xp)

Yeenoghu casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 17)

At will: detect magic

1/day: teleport

3/day: dispel magic, fear, invisibility

Legendary Resistance (3/Day). If Yeenoghu fails a saving throw, he can choose to succeed instead.
Magic Resistance. Yeenoghu has advantage on saving throws against spells and other magical effects.

Actions

Multiattack. Yeenoghu makes three Flail attacks.
Flail. Melee Weapon Attack: +16 to hit, reach 15 ft., one target. Hit: 22 (2d12 + 9) force damage. If it’s his turn, Yeenoghu can cause the target to suffer one of the following additional effects, each of which he can apply only once per turn:
Confusion. The target must succeed on a DC 17 Wisdom saving throw or be affected by the confusion spell until the start of Yeenoghu’s next turn.
Force. The target takes an extra 13 (2d12) force damage.
Paralysis. The target must succeed on a DC 17 Constitution saving throw or be paralyzed until the start of Yeenoghu’s next turn.
Bite. Melee Weapon Attack: +16 to hit, reach 10 ft., one target. Hit: 20 (2d10 + 9) acid damage.

Bonus Actions

Rampage. When Yeenoghu reduces a creature to 0 hit points with a melee attack, he moves up to half his speed and makes one Bite attack.

Legendary Actions

Yeenoghu can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. Yeenoghu regains spent legendary actions at the start of his turn.
Charge. Yeenoghu moves up to his speed.
Swat Away. Yeenoghu makes one Flail attack. If the attack hits, the target must succeed on a DC 24 Strength saving throw or be pushed up to 15 feet in a straight line away from Yeenoghu. If the saving throw fails by 5 or more, the target is also knocked prone.
Savage (Costs 2 Actions). Yeenoghu makes a separate Bite attack against each creature within 10 feet of him.

Lair Actions

On initiative count 20 (losing initiative ties), Yeenoghu can take one of the following lair actions; he can’t take the same lair action two rounds in a row:
Incite the Pack. Until the next initiative count 20, all gnolls and hyenas within the lair are enraged, causing them to have advantage on melee weapon attack rolls and causing attack rolls to have advantage against them.
Iron Spike. Yeenoghu causes an iron spike—5 feet tall and 1 inch in diameter—to burst from the ground at a point he can see within 100 feet of him. Any creature in the space where the spike emerges must make a DC 24 Dexterity saving throw. On a failed save, the creature takes 27 (6d8) piercing damage and is restrained by being impaled on the spike. A creature can use an action to remove itself (or a creature it can reach) from the spike, ending the restrained condition.
Pack Rush. Each gnoll or hyena that Yeenoghu can see can use its reaction to move up to its speed.

Yeenoghu’s lair in the Abyss is called the Death Dells. Its barren hills and ravines serve as a hunting ground, where he pursues captured mortals in a cruel game. Yeenoghu’s lair is a place of blood and death, populated by gnolls, hyenas, and ghouls, and there are few structures or signs of civilization on his layer of the Abyss.
The challenge rating of Yeenoghu is 25 (75,000 XP) when he’s encountered in his lair.

Regional Effects

The region containing Yeenoghu’s lair is warped by his magic, creating one or more of the following effects:

• Savage Predators. Predatory beasts within 6 miles of the lair become unusually savage, killing far more than what they need for food. Carcasses of prey are left to rot in an unnatural display of wasteful slaughter.
• Spiky Terrain. Within 1 mile of the lair, large iron spikes grow out of the ground and stone surfaces. Yeenoghu impales the bodies of the slain on these spikes.

If Yeenoghu dies, these effects fade over the course of 1d10 days.

Divine Symbols & Sigils

A huge triple-headed flail

Physical Description

Identifying Characteristics

Yeenoghu is often depicted as a massive gnoll about fourteen feet in height. His fur is matted and his armor amassed from fallen enemies.

Divine Classification

Demon Lord

Alignment

Chaotic Evil

Current Location

Abyss

Species

Demon

Gender

Male