Giant Narwhal

Gargantuan beast, neutral evil

Armor Class 16 (natural armor)
Hit Points 145 (10d20 + 40)
Speed 10 ft., swim 80 ft.

21 (+5) 17 (+3) 18 (+4) 2 (-4) 15 (+2) 6 (-2)

Skills Perception +5
Damage Immunities cold
Senses blindsight 120 ft., passive Perception 15
Challenge 4 (1,100 XP)


  • Echolocation. The giant narwhal can’t use its blindsight while deafened.
  • Hold Breath. The giant narwhal can hold its breath for 60 minutes.
  • Keen Hearing. The giant narwhal has advantage on Wisdom (Perception) checks that rely on hearing.
  • Siege Monster. The giant narwhal deals double damage to objects and structures.


  • Piercing Tusk. Melee Weapon Attack: +8 to hit, reach 20 ft., one target. Hit: 11 (2d10 + 5) piercing damage.
  • Stunning Tusk. Melee Weapon Attack: +8 to hit, reach 20 ft., one target. Hit: 11 (2d10 + 5) bludgeoning damage and the target must make a DC 14 Constitution saving throw or be stunned until the end of its turn.


Three times the size of a galleon, this massive whale lacks a dorsal fin and has pale, mottled skin. Its most notable feature is the single tusk protruding like a unicorn from its head.

These monstrous beasts are nothing like their smaller cousins. Ill-tempered and prone to attacking ships they see as a threat to their territory, giant narwhals will impale anything they can reach. They are known to punch holes right through ships, shivering the wooden structures apart with their thrashing.

Aggressive. The giant narwhal is a particularly aggressive creature that has a single large “tusk,” which is in fact a protruding canine tooth. It lives year-round in cold waters. Its body size can reach in excess of 30 feet and weigh over six thousand pounds. Giant narwhals reach maturity at around 11 years of age.

Arctic Predator. As an arctic predator, the giant narwhal feeds on benthic prey, mostly flatfish, under dense ice. During the summer, they feast on cod and halibut, along with any other fish they can catch. Giant narwhals are capable of diving over 5,000 feet and holding their breath for up to 60 minutes.

Slap and Spear. Giant narwhals live up to 100 years, and their horns grow continually during that time. They use their tusks as a weapon, to open breathing holes in sea ice, and to feed. Their horns identify their gender and dominance, with the larger horned narwhals dominating their herd. When feeding, a giant narwhal slaps target with its horn, stunning them temporarily long enough to feed.

Section 15: Copyright Notice

5E RPG: Oz Adventures. Copyright 2021, Mal and Tal, LLC; Author Michael Tresca.

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