The Bonesingers are Aeldari artisans who shape wraithbone, the psycho-plastic material their civilisation is built from. They’re not soldiers by trade, but almost everything the Asuryani use, from a spear to a Wraithlord, was grown by their hands.
What a bonesinger actually does
Bonesingers are Asuryani who follow the Path of the Bonesinger, using innate psychic talent to manipulate wraithbone. They cultivate groves of the stuff, then sing it into whatever shape is needed, from simple tools to entire buildings.
The work is psychic engineering. A bonesinger seeds a fragment of wraithbone, holds it with telekinesis, and sings until it takes root and grows into the intended form. Older wraithbone is slower to change, so ancient structures resist being reshaped.
They also speed up repairs. Wraithbone knits itself back together naturally, but a bonesinger can push that process along, which matters a lot when a Craftworld is under attack.
Tools, techniques and limits
A bonesinger works with their spirit stone, which glows as they shape the material, plus rune templates that act as patterns for whatever they’re growing. Some use a psychic tool called an Isitha Kasra, which is silent but boosts focus and stores extra energy.
Scale changes everything. A single bonesinger can pull a crude spear out of thin air in seconds, but it’ll be weak and brittle. Something like a Wraithlord takes real time, skill, and usually a team, because of all the intricate mechanisms inside.
Even a webway gate can be grown this way, given enough time. That’s how central the craft is to Aeldari life.
- Spirit stones focus and channel the shaping
- Rune templates set the pattern for each object
- Isitha Kasra: silent tool that stores psychic energy
- Crystalline matrices are used in some traditions, like the Exodites of the Sacred Claw
Where they fit in Aeldari society
To the Aeldari, there’s barely a line between technology and nature, and wraithbone sits right on it. Bonesingers are the people who make that idea practical.
They also have a reputation for blunt opinions. The Craftworld bonesinger Isengal once described a Mon-keigh weapon as a misshapen lump of metal, twisted against its will into something disrespectful.
Bone seers and design schools
Some sources mention bone seers and different design schools within the tradition, suggesting bonesingers aren’t a single uniform group. Older editions called them Musicians, which fits the singing angle.
Details here are thin on the ground, so treat the finer points of their organisation as uncertain.
Key facts
- Bonesingers are Asuryani on the Path of the Bonesinger, shaping wraithbone psychically.
- They build and maintain most Aeldari structures, vehicles and war machines.
- A single bonesinger can make a crude spear in seconds, but a Wraithlord takes far longer.
- They use spirit stones, rune templates, and sometimes an Isitha Kasra.
- Older wraithbone is harder to reshape than fresh material.
- Older editions called them Musicians.
FAQ
What is wraithbone?
It’s a psycho-plastic material that the Aeldari grow and shape with psychic power. It can self-repair, and bonesingers can speed that up.
Are bonesingers fighters?
Not primarily. They’re artisans and engineers, though they can shape a crude weapon quickly if they need to.
Why are they called bonesingers?
Because they literally sing to wraithbone to shape and grow it. Older editions used the name Musicians.
Can one bonesinger build a Wraithlord alone?
In theory, but it’s slow and difficult. Complex war machines usually need groups of bonesingers working together over a long period.