Cu Sith

Medium fey (bond), neutral good

Armor Class 14 (natural armor)
Hit Points 30 (4d8 + 12)
Speed 50 ft.

19 (+4) 17 (+3) 16 (+3) 7 (-2) 15 (+2) 11 (+0)

Skills Acrobatics +5, Athletics +6, Perception +4, Stealth +5, Survival +4
Senses darkvision 60 ft., passive Perception 12
Languages Understands Common and Sylvan but can t speak
Proficiency Bonus +2
Challenge 2 (450 XP)


  • Bonding. The cu sith can magically bond with one creature it can see, immediately after spending at least 1 hour observing that creature while within 30 feet of it. The bond lasts until the cu sith bonds with a different creature or until the bonded creature dies.
  • Fey Ancestry. The cu sith has advantage on saving throws against being charmed, and magic can’t put it to sleep.
  • Keen Hearing and Smell. The cu sith has advantage on Wisdom (Perception) checks that rely on hearing or smell.
  • Pack Tactics. The cu sith has advantage on an attack roll against a creature if at least one of the cu sith’s allies is within 5 feet of the creature and the ally isn’t incapacitated.
  • Plant Camouflage. The cu sith has advantage on Dexterity (Stealth) checks it makes in any terrain with ample obscuring vegetation.
  • Running Leap. With a 10-foot running start, the cu sith can long jump up to 25 feet.


  • Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 4) piercing damage.


  • Bark. The cu sith barks when it can detect its prey, audible within one mile, and continues barking for 1d4 rounds continues to shriek until the prey moves out of range and for 1d4 of the cu sith’s turns afterward.
  • Pounce. If the cu sith moves at least 20 feet straight toward a creature and then hits it with a bite attack on the same turn, that target must succeed on a DC 13 Strength saving throw or be knocked prone. If the target is prone, the cu sith can make one additional bite attack against it as a bonus action.


The cu sith is a fearsome creature resembling a massive dog with a height comparable to that of a pony. Its powerful physique is covered in thick green fur with brown spots, allowing it to blend seamlessly into its natural surroundings. The creature’s ears stand tall and erect, and its tail is long and curled, held high except when being scolded. The cu sith possesses huge forepaws with long, curved claws, perfect for navigating forested terrains.

The cu sith (COO-shee) exhibits a level of intelligence similar to most dogs, but it possesses an independent spirit and is naturally distrustful of non-fey. It is highly protective of its offspring and mates for life. These creatures have a lifespan of up to a hundred years, living alongside their elven companions in a harmonious relationship.

Cu sith are typically found in temperate woodlands and meadows. They are most commonly encountered in the company of fey, who have developed a deep bond with these magnificent creatures.

When hunting, the cu sith relies on its agility, speed, and powerful forepaws. It can move swiftly, even faster when chasing prey in a straight line. The creature utilizes its keen senses to track down potential targets, using its bark to warn its elven masters or packmates of potential dangers. Its bark can be heard from over a mile away, serving as an effective means of communication within its pack.

In combat, the cu sith utilizes its massive forepaws to knock down two-footed creatures, such as humans, before delivering bone-crushing bites. If ordered to subdue an opponent, the cu sith will clamp its jaws around the target’s throat, exerting control without causing harm unless necessary.

Section 15: Copyright Notice

5E RPG: Celtic Bestiary. Copyright 2023, Mal and Tal Enterprises, LLC; Author Michael Tresca.

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