Hell Hound
Medium Fiend
Armor Class 15
Hit Points 52 (7d8+21)
Speed walk +50
Challenge 3
Skills perception +3
Damage Immunities fire
Senses darkvision 60 ft., passive Perception 15
Languages understands Infernal but can't speak
Special Abilities
Keen Hearing and Smell. The hound has advantage on Perception checks that rely on hearing and smell.
Lawful Evil. The hound radiates a Lawful and Evil aura.
Pack Tactics. The hound has advantage on attack rolls against a creature if at least one of the hounds allies is within 5 feet of the creature and not incapacitated.
Actions
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 8 (1d10 + 3) piercing damage plus 7 (2d6) fire damage.
Fire Breath (Recharge 5-6). The hound exhales fire in a 15-foot cone. Each creature in that area makes a DC 12 Dexterity saving throw taking 21 (6d6) fire damage on a failed save or half damage on a success.
Source: Level Up Advanced 5e Monstrous Menagerie · OGL/Open