Homebrew Siren Species Details

Sirens commonly appear as an amalgamation of a beautiful woman and some form of sea life; typically, they acquire features such as fins, claws, gills, and tails, and wield these features as natural extensions of their own bodies. Some have even been known to possess wings, a trait reminiscent of seafowl, but one used to deadly effect. There is nothing so terrifying as the sight of a siren soaring downward, snatching their entranced victims from the decks of their ships.

Sirens are long-lived, having lifespans documented as long as 300 years in some cases. In addition, sirens are fiercely intelligent, to the point that they are able to speak and comprehend most known languages. Given their lack of socialization, cryptozoologists theorize that their do not communicate with their tongues, but instead with their thoughts; that a siren's song is not a physical one, but instead a manifestation of their desire, projected across the ocean's waves as a form of magic.

Sirens are exclusively female. They procure mates in much the same way as they hunt: by entrancing the object of their desire and taking advantage of the hapless victim. A siren's mating dance is a long, drawn-out process; most victims do not live to tell of the tale, as the intelligence and viciousness of a Siren is comparable only with their cardinal sin of obsession. One documented survivor of a Siren abduction was recovered after forty-one days in captivity; half-drowned, unable to speak and all but catatonic, he passed shortly after his retrieval, as the shock of the Siren's death stopped his heart.

They tend to nest along rocky outcroppings bordering the ocean, although industrial expansion has forced them further into the ocean, relegating them to distant islands, coastal caverns, and the borders of undiscovered lands.

Siren Traits

Ability Score Increase. Age. Alignment. Size. Speed. Darkvision. Amphibious. Siren's Body. Call. Charm Resistance. Languages.

Speed.

Your base walking speed is 30 feet.

Ability Score Increase.

Your Constitution, Wisdom, and Charisma scores each increase by 1.

Age.

Sirens have relatively long lifespans. They become physically mature at 20 but can live up to 300 years naturally.

Alignment.

Neutral, leaning towards evil. Sirens tend to have obsessive personalities, and the ease of using their Call is a temptation that many fall to.

Size.

Siren's vary in height and build, from just over 5 feet to just under 6. Your size is Medium.

Darkvision.

You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can't discern color in darkness, only shades of gray.

Amphibious.

You can breathe both air and water.

Siren's Body.

As a bonus action, you turn into an amphibious form, your legs becoming a single powerful tail. Your walking speed is reduced to 10 feet and you gain a swimming speed of 40 feet. While in this form, you can use your bonus action to return to normal.

Call.

Sirens are known for luring people and beguiling them. Whenever you make a Charisma (Performance) check to sing, you are considered proficient in the Performance skill and add double your proficiency bonus to the check, instead of your normal proficiency bonus. In addition, You know the friends cantrip. When you reach 3rd level, you can cast the charm person spell once and need to finish a long rest before you can cast it again. When you reach 5th level, you can also cast the suggestion spell once and need to finish a long rest before you can cast it again. Charisma is your spellcasting ability for these spells.

Charm Resistance.

You have advantage against being charmed, being a skilled charmer yourself.

Languages.

You can speak, read, and write both Common and the Primordial dialect of Aquan.