Would using Anti-lifelight kill any living thing?

[Radiant-Twinborn]

We know that lifelight is parallel to life. Because Lift's Edgedancer abilities run on Lifelight, which is basically just her body's energy fueled by food (Mostly pancakes). So if a person were to make Anti-Lifelight and stab a cow, would it burn a hole and kill it's soul? 

Edited April 1, 2022 by Radiant-Twinborn

[Returned]

I don't think so, at least not in the way you're probably thinking. I think it is too strong to suggest that Lifelight and ordinary metabolism are the same thing in general, though maybe for a physical being that exists partially in both the physical and cognitive reals maybe things would be different. Lift's Lifelight isn't just her ordinary metabolism but a weird ability that lets her metabolize food into Lifelight. We haven't seen anyone else on Roshar able to generate any form of Investiture just from eating.

That said, stabbing a living thing is generally not great for it. And if the living thing in question were especially permeated with Cultivation's essence the effect might be closer to what you describe.

[A_Dragon]

I think that if any living thing was stabbed with anti-lifelight, it definitely wouldn't be good for them, but it would depend on how closely connected to lifelight or Cultivation the being is. For example, if you stabbed a completely normal human with anti-lifelight, it would probably injure them, but wouldn't kill them outright. But if you stabbed an Edgedancer, it would probably bring them to the brink of death and possibly kill their spren.

[Gilphon]

So, like, a lot of Rosharan fauna has magic stuff incorporated into their biology. Gemhearts and what not. I imagine anti-Lifelight would be quite bad for those. But to a totally mundane creature, it'd probably just to a totally mundane stab.