Lycanthropy is, at its root, a human disease. It evolved in human populations, spreads through human blood and flesh, and its cycle of transformation is keyed to human physiology. What it does to other species is not transformation. It is rejection.
How Transmission Works #
“Any human character who loses more than half of his hit points in battle with a lycanthrope becomes a lycanthrope of the same type in 2d12 days.”
Transmission threshold: More than half HP lost to lycanthrope attacks in a single combat encounter.
Timeline:
- First half of 2d12 days: Victim begins showing signs — behavioral shifts toward the animal nature, vivid dreams of running or hunting, minor physical changes (hair growth, sharpened senses, unusual hunger)
- Full 2d12 days: Full transformation. The character becomes a lycanthrope NPC permanently under DM control.
After full transformation: The character is lost to the player. They retain memories of their former life but their alignment shifts toward the were-type’s standard alignment, and the animal nature increasingly dominates.
Lycanthropy as a Human Disease — Species Responses #
Lycanthropy is fundamentally a disease of human physiology. The transformation mechanism — the viral magic that rewrites the host’s biology — is calibrated to human bodies. What happens when it enters a non-human host depends on the species.
Humans: Standard transmission as described above. The disease finds a compatible host and proceeds normally. Human physiology accepts the transformation, however unwillingly.
Dwarves: The disease enters the bloodstream but cannot complete the transformation cycle. Dwarven physiology — dense bone structure, different metabolic processes, stone-attuned biology — is incompatible with the lycanthropic virus. The disease fights the body and the body fights back. The dwarf dies within the 2d12 day period, in increasing pain, as their body fails to either transform or reject the infection. There is no partial transformation. There is no dwarf lycanthrope. There is only a slow, ugly death that the dwarf usually faces with characteristic stubbornness, refusing to acknowledge what is happening until near the end.
Treatment window: A Cleric of 11th level or higher can still cure a dwarf within the 2d12 day window — the same treatment that would cure a human works here because it removes the infection before death, not after. The urgency is higher; a dwarf is dying, not transforming.
Halflings: The disease enters and causes immediate and violent systemic rejection. Halflings die faster than dwarves — within 1d6 days rather than the full 2d12 period — as their bodies mount a total immune response that is itself lethal. The symptoms are severe: rapid fever, convulsions, complete loss of appetite (devastating for a halfling), and progressive shutdown of organ function. The Shire’s healers have a specific protocol for “Halfling Lycanthropy” that is essentially triage management — keeping the patient alive long enough to reach an 11th-level Cleric.
Treatment window: 1d6 days. Shorter than the human window and much shorter than the dwarf window. Halfling communities near werewolf territories maintain emergency Cleric-contact protocols specifically for this.
Gnomes: Gnome biology reacts to lycanthropy the way it reacts to most hostile magic — with mechanical obstinacy. The infection takes hold, begins its work, and encounters gnome physiology’s tendency to absorb magical effects into increasingly strange physical manifestations rather than completing the intended transformation. A gnome infected with lycanthropy develops bizarre hybrid symptoms — partial animal features that shift and change unpredictably, not following any consistent transformation pattern. This is not the controlled dual-form of true lycanthropy; it is magical chaos in a body not designed to contain it. Death follows within the 2d12 period as the contradictory transformations tear the gnome apart.
Treatment window: Full 2d12 days, same as a human, but the gnome’s symptoms are so visually alarming (random partial transformations, shifting features, involuntary animal sounds) that the condition is usually identified and treated more urgently than human lycanthropy.
Elves: The elven response to lycanthropy is the most interesting of the demihuman species — and the most variable. Elven physiology is not human physiology, but it is adjacent to human physiology in ways that dwarven, halfling, and gnome biology is not. The fey heritage and the natural world connection create an unpredictable interaction.
Standard strains (all types except Werefox): The disease kills elves, but more slowly than it kills dwarves or halflings. An elf infected with standard lycanthropy lingers for the full 2d12 days in a state that resembles the early human transformation signs — behavioral changes, heightened animal senses, physical restlessness — but never completes the change. The elf’s fey nature refuses the human viral mechanism at the final stage. Death occurs at the end of the incubation period as the stalled transformation breaks down.
The elf’s death from standard lycanthropy is typically the most peaceful of the demihuman deaths — they spend the final days in a dreamlike state, apparently not distressed, which their companions may initially misread as recovery. It is not recovery. The elf is simply fading rather than fighting.
Treatment window: Full 2d12 days. The extended window means elves have the best survival odds of the demihumans — if a Cleric can be reached within the incubation period, the infection can be removed before the fatal breakdown.
Werefox — the exception: See the Werefox entry below.
The Werefox Exception — Elves and Werefox Lycanthropy #
The Werefox strain of lycanthropy is the single exception to the “kills demihumans” rule — and only for elves.
The reason is in the werefox’s nature. The werefox lineage is not purely human in origin. The fox, in the mythological traditions closest to the werefox’s actual nature, has always been associated with the fey — trickster spirits, shapeshifters, creatures that exist between the mortal world and something older. The werefox’s viral mechanism carries a fey harmonic that human lycanthropy entirely lacks. When this strain enters elven blood, it finds something it recognizes.
An elf bitten by a werefox undergoes standard lycanthropy transmission — and completes it. The transformation proceeds. The elf becomes a werefox. Not a half-transformation, not a death — a full, functional, stable werefox who happens to also be an elf.
The Elven Werefox: Mechanically identical to a standard werefox with the following additions:
- Elven senses in all forms: The elf’s 60 ft infravision persists in fox form, not just human form
- Magical immunity preserved: The elf’s immunity to sleep and charm spells carries into both forms
- Spellcasting retention: An elf who was a spellcaster before transformation retains their spells (cast in human form only, as standard werefox) — unlike human werefoxes who may develop MU abilities, elven werefoxes keep what they already had
- Alignment shift: The elf’s alignment shifts toward Neutral if it was Lawful — werefoxes are Neutral, and the transformation brings alignment toward the animal’s nature over time
- Save As: Uses whichever is better between Elf level and Fighter level, as standard elves
The cultural response: Elven communities have complex feelings about elven werefoxes. The transformation is not death — which removes one layer of grief. But the elf is permanently changed, partially animalistic, and no longer purely elven. Some elven communities accept elven werefoxes as a recognized if unusual variation; others treat them as the lost that did not have the grace to die cleanly. The elven werefox themselves tends to occupy a liminal social position — welcome in neither fully elven society nor fully human lycanthrope networks, but connected to both.
Why Werefox Spares Elves — The Lore Explanation #
Three theories exist within the Known World’s scholarly traditions:
The Fey Origin Theory (most widely accepted): The werefox virus carries a fey signature from its original source species — some fox-spirits exist on the boundary between the Prime Plane and the fey realms that elves are themselves connected to. The shared fey heritage creates compatibility.
The Forest Spirit Theory: The fox is a sacred animal in certain elven traditions — a messenger and trickster of the natural world. Some elvish scholars argue the werefox strain does not infect elves so much as invite them into a transformation the forest already considers appropriate for them.
The Magical Resonance Theory (Kha-adjacent, esoteric): The werefox’s charm ability and emotional manipulation magic operates on the same frequencies as certain elven innate magics. The viral mechanism is essentially magic of a similar type and the elven body, instead of fighting it as a foreign agent, incorporates it as a compatible enchantment.
None of these theories is proven. All three are probably partially true.
Treatment Reference — By Species #
| Species | Outcome Without Treatment | Timeline | Treatment |
|---|---|---|---|
| Human | Transforms into lycanthrope (NPC) | 2d12 days | Cleric 11th+ within 2d12 days |
| Dwarf | Death | 2d12 days | Cleric 11th+ within 2d12 days |
| Halfling | Death (faster) | 1d6 days | Cleric 11th+ within 1d6 days |
| Gnome | Death (chaotic partial transformation) | 2d12 days | Cleric 11th+ within 2d12 days |
| Elf (standard strain) | Death (dreamlike decline) | 2d12 days | Cleric 11th+ within 2d12 days |
| Elf (Werefox strain) | Transforms into elven werefox (NPC) | 2d12 days | Cleric 11th+ within 2d12 days |
| Elf (Bhut variant) | Death | 2d12 days | Cleric 11th+ within 2d12 days |
Bhut variant note: The Bhut lycanthropy strain (AC9) does not carry the fey harmonic of the werefox. An elf bitten by a Bhut-infected creature is not spared. The Bhut strain kills elves on the standard timeline.
