Hell Hound 2014
CR 3 fiend
Medium fiend, lawful evil
The hound has advantage on Wisdom (Perception) checks that rely on hearing or smell.
The hound has advantage on an attack roll against a creature if at least one of the hound's allies is within 5 ft. of the creature and the ally isn't incapacitated.
Actions
Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage plus 7 (2d6) fire damage.
The hound exhales fire in a 15-foot cone. Each creature in that area must make a DC 12 Dexterity saving throw, taking 21 (6d6) fire damage on a failed save, or half as much damage on a successful one.
Environments: Desert, Laboratory, Mountain, Shadowfell, Astral Plane, Hell, Plane of Fire, Underworld
Other versions
Source: System Reference Document 5.1 (Wizards of the Coast) · License: Creative Commons Attribution 4.0 / OPEN GAME LICENSE Version 1.0a details