Ozark Howler

Large fiend, chaotic evil
Armor Class: 16
Hit Points: 90 12d10+24
Speed: 40 ft
CR: 8 (3,900)

STR: 17 +3; DEX: 16 +3; CON: 15 +2; INT: 5 -3; WIS: 20 +5; CHA: 6 -2

Skills: Perception +8
Damage Resistances: cold, fire , lightning; bludgeoning, piercing, and slashing from nonmagical attacks
Condition Immunities: Frightened
Senses: Darkvision 60 ft, Passive Perception 15
Languages: understands Abyssal
Challenge Rating: 8 (3,900)

Pack Tactics. A howler has advantage on attack rolls against a creature if at least one of the howler's allies is within 5 feet (1.52 m) of The creature and the allay isn't incapacitated.

Actions
Multiattattck. The howler makes two bite attacks.

Rending Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 10 (2d6+3) piercing damage, plus 22 (4dl0) psychic damage if the target is frightened. This attack ignores damage resistance.

Mind-Breaking Howl (Recharge 6). The howler emit s a keening howl in a 60-foot cone. Each creature in that area t hat isn't deafened must succeed on a DC 16 Wisdom saving throw or be frightened until the end of the howler's next turn. While a creature is frightened in this way, its speed is halved, and it is incapacitated. A target that successfully saves is immune to the Mind-Breaking Howl of all howlers for the next 24 hours.

A far-off wail precedes the sight of a howler. Even a t a distance, one's mind cringes at the sound and fills with horror at the realization that the noise is drawing closer. When howlers go on the prowl, courage isn't enough to stand up against them, and even one's sanity is at risk.

Prowlers from Pandemonium. These nightmare creatures, native to Pandemonium, can also be found on most of the Lower Planes, because of the many fiends that capture them and train them a s war hounds. Howlers can be domesticated, after a fashion, but they respond only to brutal training during which they are forced to recognize the trainer as the pack's undisputed leader. A trained pack then follows its leader without hesitation. Howler packs course over the battlefields of the Blood War and also serve evil mortals who have the power and the savagery to command their loyalty.

Brutal Hunter s. Howlers rely on speed , numbers, and their mind-numbing howl to corner prey before they tea r it apart. The howl floods the minds of its victims, making complex thought impossible. They can do little more than stare in horror and stumble around the battlefield in a search for safety. Any task more demanding than that is beyond their capability. Fiends especially prize howlers for this reason, because for a few crucial moments in a battle, their howls can neutralize an enemy's ability to use spells and other powers.