Deep One

Medium humanoid, chaotic evil

Armor Class 13 (natural armor)

Hit Points 91 (14d8 + 28)

Speed 30 ft., swim 30 ft.

STR DEX CON INT WIS CHA
16 (+3) 12 (+1) 14 (+2) 10 (+0) 8 (-1) 12 (+1)

Saving Throws Str +5, Con +4, Cha +3

Damage Vulnerabilities fire

Damage Resistances cold

Senses darkvision 120 ft., passive Perception 9

Languages Common, Void Speech

Challenge 2 (450 XP)

Amphibious. A deep one can breathe air or water with equal ease.

Frenzied Rage. On its next turn after a deep one takes 10 or more damage from a single attack, it has advantage on its claws attack and adds +2 to damage.

Lightless Depths. A deep one is immune to the pressure effects of the deep ocean.

Ocean Change. A deep one born to a human family resembles a human child, but transforms into an adult deep one between the ages of 16 and 30.

Actions

Claws. Melee Weapon Attack. +5 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) slashing damage.