Tiny monstrosity, unaligned

Armor Class 14
Hit Points 10 (3d4 + 3)
Speed 20 ft., swim 30 ft.

2 (-4) 18 (+4) 12 (+1) 2 (-4) 12 (+1) 6 (-2)

Skills Perception +3, Stealth +6
Damage Immunities poison
Condition Immunities poisoned
Senses darkvision 60 ft., passive Perception 13
Proficiency Bonus +2
Challenge 1 (200 XP)


  • Hold Breath. The lavellan can hold its breath for 15 minutes.
  • Keen Smell. The lavellan has advantage on Wisdom (Perception) checks that rely on smell.
  • Toxic Aura. Any creature that starts its turn within 15 feet of the lavellan takes 2 (1d4) poison damage.
  • Underwater Camouflage. The lavellan has advantage on Dexterity (Stealth) checks made while underwater.


  • Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: 1 piercing damage, and the target must make a DC 14 Constitution saving throw or take 7 (2d6) poison damage.
  • Noxious Breath (Recharge 5-6). The lavellan exhales a cloud of toxic gas in a 15-foot cone. Each creature in that area must make a DC 14 Constitution saving throw. On a failed save, the creature is poisoned until the end of its next turn and takes 7 (2d6) poison damage. On a successful save it takes half as much damage and is not poisoned.


The lavellan resembles a small furry shrew with bright eyes. Despite its tiny size, the lavellan is remarkably swift and difficult to spot, making it a formidable predator.

The lavellan, also known as l bh-allan, la-mhalan, or la-bhallan, is a highly poisonous creature that thrives in deep pools within rivers and other aquatic environments. They are elusive creatures and prefer to remain hidden from humans and other predators.

Farmers fear the lavellan’s toxic nature and will hire adventurers to hunt it down to protect their livestock. The tiny beast’s presence is a constant threat to humans and other creatures in the wilderness.

Lavellans are highly poisonous, using their tiny size and venomous bite to harm prey and deter potential threats. Locals will kill the creature on sight to protect themselves. Boiling a lavellan and drinking the concoction acts as an antitoxin. The lavellan’s poison, both through its bite and toxic aura, makes it a dangerous creature that poses a threat to unsuspecting travelers.

Section 15: Copyright Notice

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

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