Gargantuan Monstrosity, Chaotic Neutral
AC 20 Natural Armor    Initiative +6 (16)
HP 585 (30d20 + 270)
Speed 60 ft., Climb 40 ft., Swim 40 ft.
Mod Save
STR 30 +10 +17
DEX 22 +6 +13
CON 28 +9 +16
Mod Save
INT 10 +0 +0
WIS 18 +4 +11
CHA 18 +4 +4
Skills Athletics +17, Perception +11, Stealth +13
Resistances Bludgeoning, Piercing, and Slashing from Nonmagical Attacks
Immunities Necrotic, Poison; Charmed, Frightened, Poisoned
Senses Darkvision 120, Tremorsense 60; Passive Perception 21
Languages Common, Sylvan
CR 23 (XP 50,000; PB +7)
Traits
  • Legendary Predator. The Cath Palug can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time, and only at the end of another creature’s turn.
  • Pounce of the Tides. If the Cath Palug moves at least 20 feet straight toward a creature and hits it with a claw attack on the same turn, that target must succeed on a DC 25 Strength saving throw or be knocked prone. If the target is prone, the Cath Palug can make one bite attack against it as a bonus action.
  • Magic Resistance. The Cath Palug has advantage on saving throws against spells and magical effects.
  • Otherworldly Beast. The Cath Palug counts as both a beast and a fey for effects related to creature type.
Actions

Multiattack. The Cath Palug makes three attacks: two with its claws and one with its bite.

  • Claw. Melee Weapon Attack: +17 to hit, reach 15 ft., one target. Hit: 30 (4d10 + 10) slashing damage.
  • Bite. Melee Weapon Attack: +17 to hit, reach 10 ft., one target. Hit: 36 (4d12 + 10) piercing damage plus 18 (4d8) necrotic damage.
  • Roar of Drowning Storms (Recharge 5–6). The Cath Palug lets out a roar infused with fae tide and storm. Each creature of its choice within 120 feet that can hear it must make a DC 25 Wisdom saving throw. On a failure, a creature takes 55 (10d10) thunder damage and is frightened for 1 minute. On a success, it takes half damage and isn’t frightened.
Bonus Actions

Bonus Action Name. Enter the description for how bonus actions work for your monster here.

Reactions

Reaction Name. Enter the description for your action.

Legendary Actions

The Cath Palug can take 3 legendary actions, choosing from the options below:

  1. Detect. The Cath Palug makes a Wisdom (Perception) check.
  2. Claw Attack. The Cath Palug makes one claw attack.
  3. Tail Sweep (Costs 2 Actions). The Cath Palug sweeps its massive tail. Each creature within 15 feet must succeed on a DC 25 Dexterity saving throw or take 28 (4d8 + 10) bludgeoning damage and be knocked prone.
  4. Shadow Leap (Costs 3 Actions). The Cath Palug magically teleports up to 60 feet to an unoccupied space it can see, leaving behind a cloud of shadow that heavily obscures its original space until the start of its next turn.
Mythic Actions

Mythic Action Name. Enter the description for how mythic actions work for your monster here.

Mythic Action Name (Costs # Actions). Enter the description for your mythic action.

Description

“From the waves it rose, and from its claws came ruin. Kings, knights, and warbands broke before its fury, yet the beast endured.”

The Cath Palug—“Palug’s Cat”—is a monstrous feline of Welsh legend, a creature born of the Otherworld’s tides and raised upon the isle of Anglesey. Some tales claim it sprang from a discarded kitten cast into the sea, nurtured by the fae until it grew into a terror beyond mortal reckoning. Its size rivals that of a dragon, with black fur that swallows the light, emerald eyes glowing like witch-fire, and claws that can rend plate and pierce stone.

Legends say the Cath Palug slew hundreds of warriors, tearing apart whole companies of knights before being brought low—if it was ever slain at all. Many druids whisper it is a guardian spirit of wrath and balance, punishing arrogance and overreach. Others believe it is an omen of disaster, its presence heralding storms, war, and the fall of kings.

The Cath Palug embodies the duality of the natural world: majestic yet merciless, regal yet ruinous. Adventurers who cross its path often find themselves locked in a trial of survival against nature’s fury, for the beast hunts not from hunger alone but to test the strength of those who trespass upon its domain.

In Welsh legend, the Cath Palug is a beast said to have slain hundreds of Arthur’s men. Some tales hold that Cai (Kay), Arthur’s foster brother, slew it after a monumental struggle, while others say it still prowls the mists of Anglesey. Bards speak of the creature as both punishment and prophecy: a monster born from neglect, grown to embody vengeance. Whether a divine scourge or a wild terror, its legend persists—ever waiting for new challengers to test their mettle against the Cat of Palug.

Lair and Lair Actions

If encountered in its coastal lair, the Cath Palug can invoke the power of the sea and storm:

  • On initiative count 20 (losing initiative ties), the Cath Palug can cause one of the following:
    • A wave crashes into the battlefield (30-ft. line, 10-ft. wide). Each creature in the area must succeed on a DC 20 Strength saving throw or take 22 (4d10) bludgeoning damage and be pushed 20 ft. back.
    • Shadows of drowning warriors rise from the water, grappling up to 3 creatures of the Cath Palug’s choice (escape DC 20).

Habitat: Coastal

TheGrimFrogger

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