Shadow Mastiff - CR 5 (Medium Beast)

"We were attacked by living shadows that took the form of great hounds. They struck from the darkness, and when we called forth light to scatter them, scattered us with unearthly howls that struck terror into our hearts"...

Shadow Mastiff (Medium Beast - shadow). Neutral Evil

AC: 15 (natural armour)
Hpts: 104 (19d8+19)
Speed: 40'
Initiative: +7

Str: 15 (+2) Dex: 18 (+4) Con: 12 (+1) Int: 3 (-4) Wis: 11 (+0) Cha: 4 (-3)

Saving Throws: Dex +7, Con +4
Skills: Perception +3, Stealth +10 (Living Shadow)

Damage Resistance: Living Shadow
Damage Vulnerability: Radiant

Senses: Darkvision 120'; Passive Perception 13
Language: Can be trained to understand some words of any language

CR 5 (1,800 XP)

Living Shadow: In dim light or darkness, takes half damage from all attacks apart from force, psychic and radiant. Adds twice it's proficiency bonus to Stealth checks.

Fly The Light: In bright light the Mastiff suffers disadvantage on attack rolls, saving throws and ability checks, and its speed drops to 20'. Attacks against it have advantage.


Multiattack: Makes two Bite attacks

Bite: Melee weapon attack, 5' reach, 1 target; +5 to hit; Hit: 11 (2d8+2) piercing damage +7 (2d6) necrotic damage; Hit 3+ Target must make D.C. 13 Dex or Str save or be prone.

Howl: All hearing creatures within 60' of the hound must make a D.C. 15 Wisdom save or drop what they are holding and become panicked for 5 (2d4) rounds (save ends early). Whilst panicked, is Frightened and must use every effort to get away from the mastiff.

Shadow Mastiff's first appeared in the AD&D Monster Manual II. Later they were recreated again and again. This is my 5e take on the first version, with a bit of 3.5 thrown in for good measure! Enjoy!

 "A bear in his apartment?"