Homebrew [R] Siren Species Details
Sirens
“Entrancing beings they are. If not careful, one would soon end up in their trap. Curious beings of songs and water, sirens might give you the show of your life—or end it for you if you aren't cautious.”
— Urgot Shardon, Monster Scholar of Luskan
Sirens are elusive aquatic shapeshifters with a deep connection to the forces of the sea and the enchantment of song. Long associated with ancient myths and haunting melodies, they are real and terrifyingly beautiful. Sirens rarely surface from their storm-riddled coastal homes, but when they do, it is often with purpose—and peril follows.
Their dual nature, both graceful and predatory, defines them. Beneath the waves, they possess long, powerful tails reminiscent of sharks or eels, smooth and devoid of scales. On land, these tails vanish, replaced by humanoid legs that retain the sleek lines and coloration of their aquatic form.
Lore of the Sirens
Daughters of the Deep, Voices of the Void
When the Primeval Waters churned in the earliest days of the Material Plane, it is said that the first song was sung—not by gods, mortals, or celestials, but by the oceans themselves. That song, mournful and beautiful beyond mortal comprehension, gave birth to the first sirens.
The origins of the sirens are shrouded in myth, their tales passed down like drifting kelp caught in ancient currents. Some claim they were once nymphs of the sea who, in their endless worship of forgotten oceanic gods, were transformed into something deeper, more primal. Others say they are the children of the sea itself, born of storm and sorrow, half spirit and half predator. Whatever the truth, all agree: sirens are not of mortal stock. They are as old as the tides, and twice as mercurial.
Blood in the Current
At their core, sirens are creatures torn between creation and destruction. Their legendary beauty and enchanting voices are matched only by the darkness within them—a hunger that whispers from their blood. The Thirst, as it is called, is an ancient instinct to kill. Not for food, not even for pleasure, but for expression. To sing and to slay is, to a siren, as natural as breathing.
Those who resist the Thirst must wrestle daily with a compulsion that drowns weaker minds. To keep the madness at bay, sirens turn to art, devotion, or seclusion. Many who cannot contain their urges vanish into the abyss, never to be seen again. Some are slain by their own kin in ritual duels called the Requiems—fights meant to honor their last song before they lose themselves entirely.
The Singing Wars
In the shadowed eras before recorded time, sirens once waged war against the surface races in what is now known only in fragments as the Singing Wars. Under the leadership of a siren queen called Nymeressi the Void-Tide, their cities rose from the surf, and their songs shattered minds and leveled fleets. It is said her voice cracked stone and bent dragons to her will.
But sirens do not endure conquest. Their nature is not empire, but chaos. When Nymeressi fell in battle—betrayed by her sisters—her war ended in ruin, and the sirens retreated beneath the waves. To this day, most believe them extinct or legendary. But they wait, and they remember.
Drowned Temples and Forgotten Gods
Though few sirens are religious, many trace their roots to the worship of ancient, drowned deities. Eadro, the god of aquatic life, once claimed sirens among his chosen, but they eventually strayed from his teachings. Other dark entities—abolethic gods, ocean-bound archfey, leviathan princes—left more lasting marks. Echoes of these pacts still ripple through siren bloodlines.
In hidden trenches and ruins choked with coral, ancient siren temples remain. These cathedrals to the abyss hold secrets, artifacts, and relics that predate even the elves. Some contain the names of the old gods, written in spirals and songs no surface race can translate.
Surface Tension
Sirens live in the shadow of the surface world, both fascinated and contemptuous of it. They see land-dwellers as clumsy, loud, and crude—yet they covet what lies above: freedom from hiding, the warmth of the sun, and the fear their legends inspire.
Some radical sirens dream of rising again. In tidebound cabals, siren war-priestesses whisper of a second conquest. Others advocate peace, wishing only for quiet lives among their reefs and rivers. And then there are the Tidewalkers—exiles, spies, and scouts who live in disguise among the surface folk, eyes always turned toward the sea.
Legacy of the Deep
To most, sirens are but stories. A lonely sailor swears he heard music before his crew vanished. A wrecked village speaks of a stranger with pale skin and an inhuman smile. A bard pens a ballad of love that ends in drowning.
But ask the sea elves, the tritons, or the kuo-toa, and you’ll hear truth. The sirens are real. They live. They remember. And one day, they may rise again—not as myths, but as queens of the deep and sovereigns of song.
Sirens Culture
Sirens are creatures of beauty, storm, and song. They build luminous homes beneath the waves: glowing reef cities, spiraling towers of shell and pearl, or freshwater dwellings woven from reeds and moss. Their societies value art and voice above all, and their cities echo with haunting melodies.
While most sirens give in to their primal bloodlust, others resist it—devoting themselves to art, religion, or purpose. Such restraint is rare and often met with social exile. A siren who suppresses their killing instinct must channel it into creation or worship, or risk madness.
Sirens are matriarchal. Female sirens are typically hunters and leaders; male sirens act as caretakers, craftsmen, and teachers. Children are raised communally, one at a time, under the guidance of a chosen "queen."
Although often mistaken for mermaids, sirens are far more dangerous—and far more rare. Their striking beauty and legendary songs are as much a weapon as their claws and teeth.
[R] Siren Traits
As a Siren, you have the following racial traits...Creature Type
You are a Fey
Size
You are Medium. In aquatic form, you can maneuver in narrow spaces as if one size smaller.
Speed
Your walking speed is 30 feet. You have a swimming speed of 40 feet.
Amphibious
You can breathe both air and water.
Ability Score Increase
Increase your Dexterity and Charisma scores by 2.
Age
Sirens mature by age 40 and typically live up to 250 years (females) or 200 years (males). They cease aging in appearance after maturity.
Superior Darkvision
Accustomed to the twilight of ocean depths, you can see in dim light within 120 feet 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.
Cold-Blooded
Due to your deep-sea origins, you have advantage on Wisdom saving throws against being charmed and frightened. You also have resistance to cold damage.
Magic Resistance
Due to your magical nature, you have advantage on saving throws against spells and other magical effects.
Haunting Beauty
Because of your unearthly beauty, you are proficient in the Persuasion and Intimidation skills. You also have advantage on Charisma ability checks.
Bewitching Magic
You know one cantrip of your choice from the Sorcerer or Druid spell list.
You also know the Charm Person spell and the Disguise Self spell. You can cast these spells once without expending a spell slot. You regain the ability to cast them this way when you finish a long rest. You can also cast them using any spell slots you have.
Your spellcasting ability for these spells is Charisma, Wisdom, or Intelligence (your choice when you select this species).
Enchanting Song
As an action, you sing a haunting melody. Each creature of your choice that can hear you within 120 feet must succeed on a Charisma saving throw (DC = 8 + your proficiency bonus + your Charisma modifier) or be stunned until the end of its next turn.
At the end of each of its turns, an affected creature can repeat the saving throw, ending the effect on a success. If you deal damage to a creature affected by this ability, the damage is doubled and the creature can make another saving throw immediately.
You can use this ability three times per long rest.
This ability also gives you access to the Compulsion spell, which you can cast once (+ your Charisma modifier) per long rest. Charisma is your spellcasting ability for this spell when you cast it with this trait.
Languages
You can speak, read, and write Common, Aquan, and Primordial.
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