The Aethervale

Command Palette

Search for a command to run...

Admin
monster

Ancient Sea Serpent

Ancient Sea Serpent
Ancient Sea Serpent
CR 14
Gargantuan Dragon, Neutral
Reveal Stat Block
Armor Class
17 (natural armor)
Hit Points
170 (11d20 + 55)
Speed
20 ft., swim 60 ft.
str
24
+7
dex
15
+2
con
20
+5
int
13
+1
wis
16
+3
cha
12
+1

Traits

Amphibious.The sea serpent can breathe air and water.
Legendary Resistance (2/Day).If the sea serpent fails a saving throw, it can choose to succeed instead.
Siege Monster.The sea serpent deals double damage to objects and structures.

Actions

Multiattack.The sea serpent makes one Bite attack and one Constrict or Tail attack.
Bite.mw 12 to hit, reach 15 ft., one target. ({@damage 2d12 + 7) piercing damage plus 6 (1d12) cold damage.
Constrict.mw 12 to hit, reach 20 ft., one creature. ({@damage 4d10 + 7) bludgeoning damage, and the target is grappled (escape 20). Until this grapple ends, the target is restrained, and the sea serpent can't constrict another target.
Tail.mw 12 to hit, reach 20 ft., one target. ({@damage 1d12 + 7) bludgeoning damage. If the target is a creature, it must succeed on a 20 Strength saving throw or be pushed up to 30 feet away from the sea serpent and knocked prone.
Rime Breath 5.The sea serpent exhales a 60-foot cone of cold. Each creature in that area must make a 18 Constitution saving throw, taking 49 (9d10) cold damage on a failed save, or half as much damage on a successful one.
Legendary Actions.The creature can take 3 legendary actions...
Tail.The sea serpent makes one Tail attack.
Bite (Costs 2 Actions).The sea serpent makes one Bite attack

Ancient Sea Serpent

Sea serpents rank alongside dragon turtles as some of the most feared predators of the deep and inspire many sailors' worst nightmares. Their strong fins propel them through the water at great speed.

Young sea serpents are agile hunters. They use reefs and natural camouflage to hide before they strike, picking off members of a ship's crew one by one. Ancient sea serpents grow large enough to demolish whole ships, then feed at leisure on helpless sailors in the water. At any age, a sea serpent attacks with terrible bites, a lashing tail, a constricting grip, and a frigid breath weapon that can leave sailors' corpses floating frozen amid the wreckage of their ships.

Sea serpents are as fiercely territorial as any other dragons, and they do not take kindly to ships passing over their domains without permission. Some can be appeased by offerings of treasure, but most demand that a ship's crew sacrifice one or more of their own.

Living amid the wreckage of sunken ships or in deep sea caves, sea serpents collect the cargo of the craft they sink, amassing great hoards of trade goods, sailors' trinkets, and pirates' booty.