Illustration Xan Drake

Sea Mimic

williamreid
Challenge 3
(700 XP)
Robinloft Estimated CR 2
Medium humanoid (shapechanger), unaligned (allegedly)
Armor Class 13 (studded leather)
Hit Points 67 (9d8+27)
Speed 30 ft., swim 40 ft.
STR
16 (+3)
DEX
13 (+1)
CON
16 (+3)
INT
10 (+0)
WIS
12 (+1)
CHA
16 (+3)
Saving Throws Wis +3, Cha +5
Skills Deception +5, Insight +3, Stealth +3
Senses darkvision 120 ft., passive Perception 11
Languages Primordial (Aquan), common, thieve's cant
Environments coastal, swamp, underwater
Shapechanger.

The sea mimic can use its action to polymorph into a humanoid-fish demon hybrid, or into its original form, which is humanoid. Its statistics, other than its size, are the same in each form. Any equipment it is wearing or carrying isn’t transformed. It reverts to its true (hybrid) form if it dies.

Actions

Multiattack (Humanoid form only). In humanoid form, the sea mimic makes two melee attacks.
Claw (hybrid Form Only). Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) slashing damage. Creatures struck by the sea mimic’s claws are poisoned.
Battleaxe (humanoid Form Only). Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) slashing damage, or 8 (1d10 + 3) slashing damage if used with two hands.
Deep scream (hybrid Form Only, Recharges after a Short or Long Rest).

The sea mimic emits a horrible shriek. Creatures within 30 feet must succeed on a DC 13 Wisdom saving throw or be stunned until the end of the sea mimic’s next turn. In water, the deep scream also transmits the sea mimic’s memories of the last 24 hours to any ocean demon in the same body of water.

Sea Mimic

The creature's skin turns pale gray and scaly as it takes on a hybrid form. Its head, before humanoid, becomes mottled and streamlined with bulbous black eyes. Its hands and feet transform into elongated, webbed claws.

Sea mimics are amphibious shapeshifters created when drowning sailors make a pact with ocean demons to escape death. They resume their original humanoid forms and return to their former lives as spies and agents for the ocean demons. They are devoid of their original feelings or morality other than what they mimic from memory.

Intelligence check (DC 10): Sea mimics are amphibious shapechangers that impersonate surface dwellers.
Intelligence check (DC 15): They have all the memories of those they mimic.
Intelligence check (DC 20): They are drowning sailors who have made a pact to escape death, and now serve the ocean demons.
Described by williamreid

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