How would you safely knock someone unconscious with magic?  EelKat on Building A Magic System In Your Fantasy World

How would you safely knock someone unconscious with magic? 

How would you safely knock someone unconscious with magic?

Discussion in 'Research' started by Mikmaxs, Oct 15, 2017.

Short version: My setting has magic, but magic that mostly just manipulates physical laws. (So less 'Sword and sorcery' style, where you could just conjure stuff from thin air or make random crazy things happen.) I want a spell that could quickly or immediately knock someone out without any chance of doing lasting physical harm, but can't think of a good way to do it without at least a small chance of hurting your victim.

(For an example of how magic works in other circumstances: If you wanted to instantly kill someone, you couldn't just cast a 'Death' spell, but you could cast a very precise spell that would pop some blood vessels in their brain, causing massive hemorrhaging and quick death, or you could use a bit more energy and just cause a small explosion inside their skull.)

The magic can manipulate physical forces, it just can't completely ignore the laws of physics. So you can use magic to, as suggested, squeeze the carotid artery and make someone pass out, but you can't just cast an 'unconsciousness' spell to make them suddenly pass out for no physical reason.

kate zold said: ↑Would physical laws include chemicals and hormones? Figure out which naturally occurring chemical in the body can induce a coma/unconsciousness and increase/decrease that. This could in effect be an extreme version of a "calming spell".

Yes, they technically could, but recombining molecules in someone's blood/body or else creating those chemicals out of raw energy would be far too precise for most practical applications - Not impossible, but really, really difficult verging on 'Not worth the effort of trying', especially since a minor mistake with chemical imbalances can easily prove fatal.
Hormones could work better in terms of 'I'm going to agitate (such-and-such gland) in order to cause X reaction', but I'm not sure that would be quick or effective enough in a combat situation.

Maximum7 said: ↑You don't need to explain the process. Just use a spell that makes your body go numb and puts you to sleep

In this case, I actually need to have a specific reasoning, because it plays into a later story beat - Character #1 knocks out an enemy, and then Character #2 is able to accurately predict how long it'll take for that enemy to wake up, because Character #2 is very familiar with what magic/techniques Character #1 is familiar with. I don't want to go with a more "You always use the same spell," I want to demonstrate that Character #2 has a specific understanding of Character #1s magic. 

newjerseyrunner said: ↑Massive changes in bloodflow can cause unconsciousness. What about a sudden g-force? It only takes about 15 Gs for a few seconds to knock someone out. Check out some astronaut training technology.

That would definitely work, but 15 Gs is (lemme do some math here) a metric crap ton of energy, which makes it an inefficient, if doable, process. (Not to mention that some precision would be required to exert 15 Gs without just sending the target flying backwards.) 

MythMachine said: ↑The way it seems to me, your magic is some sort of underpowered "Force" (as in Star Wars), in that it can enhance and extend physical capabilities and feats, but nothing along the lines of mental manipulation or lightning generation.

Mental manipulation doesn't really exist (at least not in Star Wars levels), but lightning generation totally could. It's expensive in terms of how much energy it consumes, but fairly simple - Not as simple as 'I shove this thing really hard', but still a fairly basic force of nature. 

Illusions, mental manipulation, stuff in that range generally happens by either manipulating physical forces or with really precise brain chemistry that can't happen out of what amounts to a lab setting. Making an illusory person who looks totally real isn't possible, but making an area darker or brighter, influencing shadows or exaggerating/minimizing movement is possible. 


(For the record, healing magic also exists, but requires the practitioner in question to effectively have a medical degree if they want to do anything advanced - Barring that, they need a spell that is incredibly focused and precise.)

For what it's worth as far as setting background goes: Since magic follows fairly practical principles and rules in my setting, it's also starting to be used for simple machinery and technology. Sorcerers already use runes and sigils in order to direct and focus magical power, so people with engineering backgrounds have figured out how to directly harness that power and use those runes to control it, cutting out the sorcerer entirely. (It's still in the 'Not very efficient or precise' stage, but it's getting there.)

Gadock said: ↑So as I gather from your info, magic works as extra energy applied to existing forces to ones will ( kinda exactly like mine  ). I can understand you can do this at distance and you're able to change basically everything, but the more elaborate the more difficult it is and can more easily cause mistakes.[SNIP]How does your magic work in general though? Can everyone just do what they want? What kind of limits are there?

I'm glad you asked that!
So, in my setting, there exists a nebulous force of energy that is created as a byproduct of sentient, conscious life, which is called 'Spirit'. This spirit exists in all humans, but is generally difficult to extract, and can be obtained in one of four ways:

• A sorcerer can directly convert their own 'energy' in order to create spirit. (They burn calories and exhaust themselves, basically.) This is the least powerful, but also the least costly.
• A sorcerer can also destroy their own memories, which is very efficient and powerful, but runs the risk of driving them mad or destroying memories they didn't want to - Since memories can often be intermingled and fuzzy, this is a huge risk and not a popular choice.
• It can be extracted from fresh blood, or blood which was carefully sealed in an insulated container. (It doesn't have to be a sorcerer's blood.) This is more powerful than direct energy conversion, but less efficient than memory.
• It can be extracted from a person as that person is killed, which is the most powerful source of Spirit by a longshot, but is also not particularly useful unless a massive spell is being cast due to how much energy is being released. 

(The last two can also be done without the intervention of a sorcerer, using modern machinery/technology, but it's not as efficient at the extraction.) 

Sorcerers are simply people who have the ability to sense Spirit and manipulate it directly. They have a 'sixth sense' allowing them to control spirit, move it from one place to another, or convert it into other forms of energy.


In order to cast a spell, Spirit has to be channeled into a vessel of some kind which has runes carved, marked, or written onto it. (Usually a staff or wand is preferred in combat, depending on the spell in question. Books are also popular, simply because so many runes can be written into a book that they can be incredibly precise.) Certain objects are better at conducting spirit than others - Most hardwoods are good choices, silver and gold are both excellent (as is electrum,) salt and iron will both ground out magical forces in the same way that rubber will stop electricity.

Once the vessel has been filled with Spirit, the sorcerer thinks about what they want the spell to do, and then says magic words describing the spell in question. The Spirit is then 'filtered' through everything, and creates a tangible result that is reflective of those filters.

For example, if you have a staff carved with the runes for 'Fire', and you think to yourself, I want this spell create a ten foot wall of fire blocking off that courtyard, and then you say the magic words for 'Fire wall', it'll create a wall of fire that's not actually ten feet long, but instead would be whatever you think ten feet looks like, in approximately the spot that you wanted it to go. (Assuming you pumped enough energy into the spell to actually create a big enough fire, and to fuel it for any length of time if there's no normal fuel nearby.)

However, if you instead had a staff with the runes for 'Ten foot wall of fire', and thought the same thing, and then said the words for 'Ten foot wall of fire', then the wall would end up being precisely 120" from tip to tail. 

You could NOT, on the other hand, have a staff carved with the word 'Fire', and then think to yourself, I want to make the room darker, and then say the words for 'Darkness'. The filters would contradict each other, and the spell would fizzle out. 

You could possibly use 'Fire' runes to create a light, or heat the air in order to create a burst of wind, but that'd require creative workarounds and a lot of effort. 

As such, general tools are preferred in combat, since they're more flexible, while incredibly precise tools (or virgin tools and a sorcerer who is fluent in runes and able to mark down whatever runes he needs, on the fly) are preferred for specific, complicated tasks. 

(As a side-note: There are other sentient, conscious species besides humans, (Dragons being the most prominent,) but they don't really interact with the story much, so it's not very relevant. (There are also dragon sorcerer-equivalents.)

In the case of knocking someone out, that would be something that the sorcerer already has prepared - A method of knocking someone out in a quick, nonlethal manner that would work universally on most people without variation or specific changes needed.