Medium undead, chaotic evil

Armor Class 15 (natural armor)
Hit Points 52 (8d8 + 16)
Speed 30 ft., swim 40 ft.

14 (+2) 15 (+2) 14 (+2) 10 (+0) 12 (+1) 8 (-1)

Skills Perception +3, Stealth +4
Damage Resistances cold, fire, lightning
Damage Immunities poison
Condition Immunities poisoned
Senses darkvision 60 ft., passive Perception 13
Languages understands Common and Infernal but can’t speak
Proficiency Bonus +2
Challenge 4 (1,100 XP)


  • Death Gaze. When a creature that can see the luideag’s eyes starts its turn within 30 feet of the luideag, the luideag can force it to make a DC 12 Constitution saving throw if the luideag isn’t incapacitated and can see the creature. If the saving throw fails by 5 or more, the creature is reduced to 0 hit points unless it is immune to the frightened condition. Otherwise, a creature takes 16 (3d10) psychic damage on a failed save. Unless surprised, a creature can avert its eyes to avoid the saving throw at the start of its turn. If the creature does so, it has disadvantage on attack rolls against the luideag until the start of its next turn. If the creature looks at the luideag in the meantime, that creature must immediately make the saving throw.
  • Hold Breath. The luideag can hold its breath for 15 minutes.
  • Innate Spellcasting. The luideag’s innate spellcasting ability is Wisdom (spell save DC 12). It can innately cast the following spells, requiring no material components:
  • Sunlight Hypersensitivity. The luideag takes 5 radiant damage when it starts its turn in sunlight. While in sunlight, it has disadvantage on attack rolls and ability checks.
  • Undead Nature. A luideag doesn’t require air, food, drink, or sleep.


  • Fist. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 2) bludgeoning damage plus 9 (2d8) necrotic damage.
  • Withering Gaze. One creature that the luideag can see within 60 feet of it must make a DC 12 Constitution saving throw, taking 22 (4d10) necrotic damage on a failed save, or half as much damage on a successful one.


  • Misty Step. The luideag magically teleports up to 30 feet to an unoccupied space it can see.


The luideag is a squalid corpse with a ragged appearance. Its head is covered in a cowl, and its whole form exudes maleficence.

The luideag (LOO-e-DAG) is often found near dark and remote bodies of water, especially lochs and lakes. It is most active at night, lurking in the shadows and fog that often surround its chosen habitats.

The luideag is a sinister creature that preys upon the unsuspecting. It appears suddenly and without warning, using its innate magical abilities to create illusions and fog to disorient its victims. Once it has the advantage, it strikes with its fists, aiming to incapacitate and curse its prey before retreating into the darkness.

Section 15: Copyright Notice

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

This is not the complete section 15 entry - see the full license for this page