Magical gene / lines and strokes

Wyrmwood Sigils

Curling black scrollwork wrapping the neck, barrel, face and legs, threaded with a luminous ichor that tints the mane, drips down the hip, trails off the tail and caps the hooves.

What it can come out as

OutcomeCarrying
Wyrmwood SigilsWys/Wys · Wys/Wyd · Wys/n
Wyrmwood Sigils, unlitWyd/Wyd
Wild typeWyd/n · n/n

How each one is actually drawn - region by region, and the layers it is built from - is on the coding tab.

Crossing two of them

Finding one

About 1 in 3,571 wild horses is born showing this. That is the whole of the supply: catch one, or make one with the carrot below. Breeds set their own pools and a breed built around this gene will carry it far more often than the wild population does.

Wild pairShows asHow often
Wys/WysWyrmwood Sigils0.001% — 1 in 100,000
Wys/WydWyrmwood Sigils0.004% — 1 in 25,000
Wys/nWyrmwood Sigils0.019% — 1 in 5,263
Wyd/WydWyrmwood Sigils, unlit0.004% — 1 in 25,000
n/nWild type99.972%

Its gene carrot

The file

common/src/main/resources/horsegenetics/genes/wyrmwood_sigils.json — a data-driven gene, not a Java class. It is listed in the index.json beside it and registered by Genes' class initialiser at startup.

Keyhorsegenetics.wyrmwood_sigils
Phasemagical — it adds signed colour in phase 3, after the pigment has resolved
Priority378 — where it sits in the one (priority, key) paint order
AllelesWys · Wyd · n
Varies per horse3 values drawn once off the expressing allele copy, so a foal that inherits the copy inherits the look
Built fromAXIS, PARTS, RAMP, SPOTS, STROKES, TOWARD, WAVES, emissive

Why it is built this way

Imported from the magic-gene intake, 2026-09-08. Black filigree first, ichor over it. The hip drips are a spot field stretched 2.5x along Y and cut to the rear of the barrel, which is what makes them run downward instead of sitting as dots.

Only the ichor layers are emissive - the scrollwork is not. In the dark a wyrmwood horse is the glow alone, and the black is simply absent, which is the effect the source asked for.

What it paints

Each outcome, described the way the gene file describes it, and then the layers that draw it in the order they are painted. The prose is the part a reader checks a bake against; the list underneath is what the engine actually did.

Wyrmwood Sigils

Black filigree first, then the ichor over it - and the ichor is emissive, so the sigils are still there when the light goes. The drips are a spot field stretched two and a half times along Y and cut to the hip, which is what makes them run downward rather than sit as dots.

  1. scrollwork banded round the neck — AXIS × STROKES, painted with TOWARD
  2. curls over the barrel — STROKES, painted with TOWARD
  3. finer ones over the face — STROKES, painted with TOWARD
  4. bands down the forelegs — WAVES, painted with TOWARD
  5. ichor through the mane — PARTS, painted with TOWARD, and it glows
  6. ichor pooling in drips down the hip — SPOTS × AXIS, painted with TOWARD, and it glows
  7. and a trail of it down the tail — PARTS, painted with RAMP, and it glows
  8. capped hooves — AXIS, painted with TOWARD, and it glows

Wyrmwood Sigils, unlit

The same scrollwork and the same ichor, in pigment rather than light - the whole pattern is there, and none of it glows. Fully recessive.

  1. scrollwork banded round the neck — AXIS × STROKES, painted with TOWARD
  2. curls over the barrel — STROKES, painted with TOWARD
  3. finer ones over the face — STROKES, painted with TOWARD
  4. bands down the forelegs — WAVES, painted with TOWARD
  5. ichor through the mane — PARTS, painted with TOWARD
  6. ichor pooling in drips down the hip — SPOTS × AXIS, painted with TOWARD
  7. and a trail of it down the tail — PARTS, painted with RAMP
  8. capped hooves — AXIS, painted with TOWARD

Wild type

No sigils.

Paints nothing.