Deep Scion: Monster Guide for D&D

Deep scions began life as people who were stolen from shore or saved from sinking ships and offered a terrible bargain by an undersea power: surrender, body and soul, or drown. Those who submit are subjected to an ancient ritual widespread among evil aquatic creatures. Its methods are painful and the result never certain, but when it works, the magic transforms an air-breathing person into a shape shifter that can take on an aquatic form.

A deep scion emerges from the depths in service to their underwater master, which is likely a kraken or some other ancient being of the deep. While wearing the mind and body of the person they once were as a sort of mask, the creature is bent on ful filling their master’s desires. Sometimes a deep scion returns to their former home-unexpectedly found alive when all hope was lost. At other times the deep scion takes on a new identity. In any case, it is the deep scion’s duty to infiltrate the air-breathing world and report back to their master. When set to this task, a deep scion worms their way into the life of an unsuspecting enemy as a new friend, a lover, the perfect candidate for a job, or some other role that enables the minion to carry out their master’s commands.

Medium Monstrosity, Typically Chaotic Evil

Armor Class: 11
Hit Points: 67 (9d8 + 27)
Speed: 30 ft. (20 ft. and swim 40 ft. in hybrid form)

    STR – 18 (+4)
    DEX – 13 (+1)
    CON – 16 (+3)
    INT – 10 (+0)
    WIS – 12 (+1 )
    CHA – 14 (+2)

Saving Throws: Wis +3, Cha +4

Skills: Deception +6, Insight +3, Sleight of Hand +3, Stealth +3

Senses: darkvision 120 ft., passive Perception 11

Languages: Aquan, Common, thieves’ cant

Challenge: 3 (700 XP)

Proficiency Bonus: +2

Amphibious (Hybrid Form Only). The deep scion can breathe air and water.


Multiattack. The deep scion makes two Battleaxe attacks, or it makes one Bite attack and two Claw attacks.

Battleaxe. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 4) slashing damage, or 9 (1d10 + 4) slashing damage if used with two hands.

Bite (Hybrid Form Only). Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: 6 (1d4 + 4) piercing damage.

Claw (Hybrid Form Only). Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) slashing damage.

Psychic Screech (Hybrid Form Only; Recharges after a Short or Long Rest). The deep scion emits a terrible scream audible within 300 feet. Creatures within 30 feet ofthe deep scion must succeed on a DC 13 Wisdom saving throw or be stunned until the end of the deep scion’s next turn.

In water, the psychic screech also telepathically transmits the deep scion’s memories of the last 24 hours to its master, regardless of distance, so long as it and its master are in the same body of water.


Change Shape. The deep scion transforms into a hybrid form (humanoid-piscine) or back into its true form, which is human like. Its statistics, other than its speed, are the same in each form. Any equipment it is wearing or carrying isn’t transformed. The deep scion reverts to its true form if it dies.