Linnorm, Fjord

Family: Linnorm

Gargantuan dragon (linnorm), chaotic evil

Armor Class 21 (natural armor)
Hit Points 246 (16d20+80)
Speed 30 ft., fly 70 ft., swim 70 ft.

25 (+7) 18 (+4) 21 (+5) 5 (-3) 17 (+3) 20 (+5)

Saving Throws Str +14, Con +12, Int +4, Wis +10, Cha +12
Damage Immunities cold
Damage Resistances bludgeoning, piercing, and slashing from nommagical attacks
Skills Perception +17
Senses darkvision 60 ft., blindsight 60 ft., truesight 60 ft.; passive Perception 27
Languages Draconic, Sylvan
Challenge 21 (33,000 XP)

Special Traits

  • Amphibious. The fjord linnorm can breathe air and water.
  • Death Curse: Drowning. If a creature reduces a fjord linnorm to 0 hit points or kills it outright, the creature must make a DC 20 Wisdom saving throw. On a failed save, the creature suffers from the curse of drowning. The cursed creature loses the ability to breathe water and cannot gain that ability; in addition, a creature that can hold its breath can hold its breath only half as long.
  • Immunity to Curses. The linnorm automatically succeeds on saving throws against curses.
  • Legendary Resistance (3/Day). If the linnorm fails a saving throw, it can choose to succeed instead.


  • Multiattack. The linnorm makes three attacks: one with its bite and two with its claws. It can use constrict in place of one claw attack.
  • Bite. Melee Weapon Attack: +14 to hit, reach 15 ft., one target. Hit: 16 (2d8+7) piercing damage, plus 10 (3d6) cold and 10 (3d6) poison damage.
  • Claw. Melee Weapon Attack: +14 to hit, reach 10 ft., one target. Hit: 13 (2d6+7) slashing damage.
  • Constrict. Melee Weapon Attack: +14 to hit, reach 20 ft., one target. Hit: 13 (2d6+7) bludgeoning damage and the target is grappled (escape DC 24). Until this grapple ends, the creature is restrained, and the linnorm can’t use constrict on another target.
  • Icy Breath (Recharge 5-6). The linnorm expels poisonous icy fluid in a 120-foot line that is a 5-feet wide. Each creature in that area must make a DC 20 Constitution saving throw, taking 72 (16d8) poison damage on a failed save, or half as much damage on a successful one. On a failed saving throw, the freezing liquid quickly hardens to sheets of ice, causing the creature to be restrained for 1 minute. On its turn, a restrained creature can use its action to make a DC 20 Strength check, freeing itself on a success.

Legendary Actions

The linnorm can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The linnorm regains spent legendary actions at the start of its turn.

  • Detect. The linnorm makes a Wisdom (Perception) check.
  • Claw Attack. The linnorm makes a claw attack.
  • Drag (Costs 2 Actions). The linnorm uses Constrict. The linnorm can then swim up to half its swimming speed.


Fjord linnorms are massive eel-like dragons with two webbed talons and a tail ending in large and powerful flukes. They dwell among the deep waters that grace polar coastlines where fingers of land create complex rivulets, venturing out to sea to feed on sharks and whales when they cannot find settlements or trading ships to savage. As their favored haunts often overlap with coastal trade routes, regions known to be within the territory of a fjord linnorm are often avoided by ships. Fjord linnorms are not particularly adept at capsizing ships, as are some other large aquatic monsters, but one might argue that such tactics are unnecessary for a creature the size and power of a fjord linnorm in the first place.

Section 15: Copyright Notice

Sea Monsters (5E) © 2021, Legendary Games; Authors Michael Ritter, Michael “solomani” Mifsud, Robert J. Grady, Mark Hart, Jeff Ibach, Alex Riggs, Scott D. Young, Jeff Lee, Matt Kimmel, and Jason Nelson.

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