A Beginner’s Guide to Drucraft #23: Light Sigls (I)

An overview of some of the most common Light sigls.  Light sigls are almost always spherical, and their colour varies from light blue to dark blue.

Torch/Torchlight

Sub-branch:  Projection
Type:  Continuous/Triggered
Appearance:  Pale blue, opaque
Rank:  D

The most basic of all Light sigls, and often considered the most basic of all sigls.  Converts essentia into visible light which is projected outwards to illuminate the surrounding area.  Comes in dozens of varieties:  continuous ‘light rings’ which shine when put on, triggered versions designed to be used by channellers, ‘ray’ designs which project a narrow beam, ‘searchlight’ versions which project a cone, and ‘finder’s stones’ designed to only activate in essentia-rich environments, and many others.

Torch sigls have exceptionally low Lorenz ratings, requiring hardly any personal essentia to activate.  Because of this, as well as how cheap and easy they are to produce, these sigls are commonly used as training tools.  Countless generations of drucrafters have learned to sense on a continuous torch sigl, learned to channel on a triggered torch sigl, and (eventually) learned to shape by crafting one for themselves.

Torch sigls can theoretically be made at any rank, but in practice there’s little reason to make one at above the minimum rank of D.  A higher-grade torch sigl costs far more and rarely does anything that a D-rank one couldn’t.

Torch sigls are often casually referred to as ‘light sigls’, but due to how confusing it is to have both ‘light’ and ‘Light’ sigls, formal descriptions generally go with the name ‘torch sigl’ instead.

Dazzle

Sub-branch:  Projection
Type:  Triggered
Appearance:  Blue, opaque
Rank:  D to D+

Essentially a weaponised version of the Torch sigl, the dazzle sigl is made by taking a Torch sigl and adding a capacitor, storing up energy to be released in a single blinding flash.  The light is directed outwards in a cone, both to avoid dazzling the wielder and also to avoid wasted energy.

Dazzle sigls are popular as a self-defence weapon because of how cheap they are:  given how little essentia they require to make and activate, they’re quite cost-effective.  Their main drawback is that they require the target to be looking directly at the sigl, and a weapon that anyone can counter by closing their eyes isn’t what most people would call reliable.

Higher-grade dazzle sigls allow for a more intense flash.  More sophisticated models allow the cone to be narrowed or broadened, allowing the wielder to change the sigl’s focus on the fly.

Gloom/Blackout

Sub-branch:  Negation
Type:  Triggered
Appearance:  Very dark blue, opaque
Rank:  D to C+

The inverse of the Torch effect, this sigl reduces the brightness of light in a sphere around the channeller by converting visible light to free essentia.  The radius of the sphere and the level of light reduction depends on the power of the sigl.  D-rank and D+ versions produce an area of shadowed gloom, while versions of C-rank and above produce a sphere of total darkness.  The weaker versions are usually referred to as ‘gloom’ sigls, while the more powerful ones get the ‘blackout’ label.

Obviously this sigl blinds the wielder just as thoroughly as it blinds anyone else.  As such, to be effective, it is typically combined with some way for the wielder to see while everyone else can’t.  The most common approach is to design the sigl in such a way so as to negate most frequencies but exclude certain ones – the wielder can then use light-enhancing goggles or another sigl to see in those specific frequencies, while everyone else is blinded.  Used in this combination, this sigl becomes a fairly cheap and effective method of ‘invisibility’.  The main drawback, of course, is how obvious it is – a giant sphere of darkness is hardly subtle.  As such, it is much more useful at night or in other poorly-lit environments – in daytime, the amount of attention it draws tends to counteract any benefit it might provide.

Shadowman

Sub-branch:  Negation
Type:  Triggered/Continuous
Appearance:  Very dark blue, translucent
Rank:  C to C+

A more advanced variation of the Blackout sigl that affects a very small area around the wielder, but works only on outgoing radiation.  Visible light travelling away from the wielder is converted into free essentia;  visible light travelling towards the wielder is unaffected.  The result, to observers, is to make the wielder look like a sort of humanoid shadow, fuzzier around the edges and pure black at the core.  The wielder, meanwhile, can see just fine, although the loss of indirect light does hamper them slightly – wielders often describe it as like trying to see on a very cloudy day.

While usually thought of as a stealth sigl, in some ways this sigl does the exact opposite.  A drucrafter with an active shadowman sigl is, in most cases, incredibly easy to spot – in any conditions other than total darkness, the huge moving blot of shadow is very obvious.  However, while the shadow is obvious, actually seeing the wielder or making out their movements is close to impossible.  You can tell that someone’s there, but not who they are or what they’re doing – useful for those who don’t want to be identified.

It should not be a surprise that this sigl is heavily associated with criminal activity, particularly raiding and other forms of theft.  It’s illegal to sell to the public in most countries, and possessing one is typically seen as highly suspicious.

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10 Responses to A Beginner’s Guide to Drucraft #23: Light Sigls (I)

  1. Celia says:

    Interesting article. Everything still on track for release of An Instruction in Shadow book & audiobooks 10/15? 🙂

  2. Celia says:

    Yay!!! Pre ordered the ebook (for actual reading), the audiobook (for driving, and Will Watt’s excellent narration), and the Broken Binding special edition (cause it’s signed, and really pretty!) Thanks for doing the signed edition again!

  3. Bill says:

    That’s for the sigl guide to light – very interesting. I note that you didn’t include sigls that might operate outside the visible spectrum? Is that because the higher frequencies take more Essentia & skill to make? Or are they all difficult – I was thinking about see-in-the-dark Infrared sigls…

    I’m so pleased that Instruction in Shadow is on-time for release, I’ve been looking forward to it for some time now! I’m wondering if there’s a cliff-hanger at the end – again!

    • Benedict says:

      No, the only reason I didn’t include ones operating outside the visible spectrum is that there’s a limit on how many I’m willing to include in a single article. There are a lot of sigls out there!

  4. Kevin says:

    Fascinating as always, apparently it is Stephen’s resourcefulness and his enemies stupidity why his “weak” flash sigl is so effective. But I still think he makes good sigls for what its worth.

    And is there going to more on Light Sigls next Friday or after the release of Instruction in Shadow? I only ask because of the numbered parenthesis and how the sigls are going up in class strength but I don’t know if that is an in universe title or if it’s for us regular readers if that makes sense?

    • Benedict says:

      I’ve got a Part II ready to go, but after that I’ll probably move on to Matter essentia and Matter sigls rather than doing a Part III and Part IV!

      • Kevin says:

        Yeah I think with Light Sigls it’s okay to go a little more in depth since the UK is where the most powerful sigls come from and thus most likely to be used by Stephen.

        And it’s really cool we are seeing the difference in power and what effects they can create as they advance.

        I am hoping we get a brief description of S-S+ Light sigls, on Reddit there was speculation of lightsaber ones!

  5. Imp says:

    Regarding the invisibility/shadowman sigil and the idea of blocking a fragment of the electromagnetic spectrum (a neat idea BTW):

    1. Why did Stephen aim for a vision sigil instead of just buying infrared goggles?
    2. That being said, why does his vision sigil not sample multiple bands across the spectrum, like a multispectral camera (he uses low frequencies)? While you implied that there is an arms race going on, blocking the whole spectrum seems like a hard job, so his vision sigil should be able to pierce other invisibility effects quite reliably.
    3. That being said, do I understand correctly that the vision sigil used by a certain someone in ‘An Instruction in Shadow’ is exactly the more expensive, adjustable model, where you can shift wavelengths?
    4. If I were a rich guy in the world of drucraft who needs monitoring in his mansion, I would use hyperspectral cameras with motion detection apart from normal ones. HSI cameras can reliably sample 400-2500nm and a bonus is that they can immediately tell you what frequencies are used by an ‘invisible’ person. They are a bit expensive, but not for the rich ones 🙂

    • Benedict says:

      1. Infrared goggles are expensive and have drawbacks. Stephen also just doesn’t know much about them.
      2. Because it would take too much power. Shifting one frequency to another frequency is much easier than shifting many different frequency bands at once.
      3. Possibly? Not sure which one you mean.
      4. That would be a good choice if you were worried about invisible attackers, yes. Not many people are that paranoid, but the kind likely to own mansions on Wells might just be.

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