Weekly Beasties – Vengeful Cecaelia

Weekly Beastie

10050 Cecaelia_ACecaelia’s are not well-known mythological creatures, especially compared to the more familiar mermaid. In fact, the only real example from popular culture is The Little Mermaid‘s Ursula, a villainous figure who despises King Triton and seeks to lead his daughter astray. Whatever you think of the film, there’s an unspoken motivation which makes her a compelling character – what if Ursula had a legitimate reason to hate all mermaids which explained the absence of her own race?

This thought inspired the Vengeful Cecaelia. If the mermaids truly did try and wipe out the Cecaelian people, wouldn’t the survivors be the most powerful among them? Skilled warriors with magical gifts who hate mermaids with a passion? And wouldn’t they try to have vengeance on their enemies at every opportunity?

Like the Cursed Allip, this Cecaelia artwork is provided by the folks at ArcKnight, who producer Flat Plastic Miniatures and other RPG supplements. Visit their site for a cloaker of your own!

A pay-what-you-want, OGL compatible PDF of the Vengeful Cecaelia can be found at DriveThruRPG. You can also support our Weekly Beasties by giving to our Patreon page. The Beastie itself can be found below:

Medium monstrosity, chaotic evil

Armor Class 18 (natural armor)

Hit Points 42 (6d10 + 12)

Speed 20 ft., swim 40 ft.

STR 16 (+3) DEX 19 (+4) CON 14 (+2) INT 10 (+0) WIS 13 (+2) CHA 16 (+3)

Skills Acrobatics +7, Athletics +6, Deception +6, Intimidation +6, Survival +5

Senses Darkvision 60 ft., Tentacle Sense 10 ft., Passive Perception 11

Proficiency Bonus +3

Challenge Rating 7 (2,900 XP)

Spellcasting. The Vengeful Cecaelia is a 7th level spellcaster. Its spellcasting ability is Charisma (spell save DC 14, +6 to hit with spell attacks). The Cecaelia has the following Warlock spells prepared.

Cantrips (at will): Eldritch Blast, Minor Illusion
Spells (2 slots): Charm Person, Hypnotic Pattern, Hallucinatory Terrain, Hold Person, Magic Circle

Poor Unfortunate Souls. Once per day, a Vengeful Cecaelia may use its connection with dark aquatic gods to transform an aquatic creature into a land-based creature, or vice versa. As a side effect, the transformed creature will have no ability to speak.

This is commonly used to turn mermaids into humans, usually without the expectation that they need to be brought to land first. The Vengeful Cecaelia may make the transformation temporary at will, adding a time limit or other conditions as appropriate.

Multiattack. The Vengeful Cecaelia may attack up to three times in a single turn when using multiple weapons with its hands and/or tentacles.

Spellcasting warrior. The Vengeful Cecaelia may cast a spell and make attacks normally in the same turn provided its hands are free to fulfill any gesture-based requirements. This action is compatible with multiattack.


Spear. Melee/Ranged Weapon Attack: +7 to hit, melee reach 5 ft. or 10 ft. with tentacles or ranged reach 30 ft. One creature. Hit: 7 (1d6 + 4) piercing damage.

The half-human, half-octupus Cecaelia race is barely recognized alongside aquatic creatures like mermaids – and to be completely frank, mermaids much prefer it that way. Decades ago, the two races faced each other in a devastating war that boiled the seas and ultimately left the Cecaelia race almost extinct. Scholars have disputed since whether the mermaids were simply defending themselves or engaged in an organized genocide. What is completely certain is that the surviving Cecaelia are among the hardiest members of their race, and have almost exclusively sworn vengeance against the mermaid race.

The surviving Vengeful Cecaelia’s are a hardy race of spellcasting warriors, committed to utterly destroying their enemies. Experts in both physical and magical combat, a Cecaelia tends to wield weapons with its tentacles which keeps its hand free for spells. If one manages to gain the respect of a Cecaelian war party they can be valuable allies, but they will spare no quarter for mermaids. In fact, they’re suspected of using transformative magics to turn mermaids into humans – usually while they’re still trapped underwater.


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