Give me 2 unrelated concepts, and I'll make a *shitty* magic system out of them.

Let's go, boys.

Crystal Pepsi and a Kamen Rider henshin belt.

Crystal Pepsi was advertised as "Pure." The belts were used for transformation. This system lets people purge traits from themselves and place them in prepared potions, and the drinker gains those traits.

rubber bands and rocks

Crystals that let users stretch objects that they're embedded in, and they snap back to their original shape when the crystal is removed.

water mellone and gape so da

it taste y

Giant isopods and office chairs.

4chan tried to make isopods racist. Office chairs are associated with busywork. This is a system based on obnoxiously long spell scrolls, but by creating one, you can modify people's perception of a specific thing that you choose when you start making the scroll worldwide.

More later.
 
Chocolate cake and farts
 
I am being attacked by ants.
The air that you put in your anus from your last system is also transformed into ants.

Jean Jaques Rousseau's Du Social Contract and Sonic the Hedgehog
If you can fetishize a certain version of reality, you can enforce it within a short range of yourself. The more repulsed everyone else in your personal reality is by your fetish, the larger it is.

The "oh-ah-ah-ah-ah" at the very start of the song "down with the sickness" and mokujikigyo(the diet of japanese self-mummifying monks consisting of shit like tree-bark, dead leaves, resin)

This is going to be another incantation system; Incantations are simple, but must be screamed at the top of the incanter's lungs. Again, they can change the structure of objects, but when the incanter does that, they also take part of that transformation themself; Ex. preserving food slowly dries out the user's body.
 
Reaganomics and basketball
 
Last set for the night. I'm just gonna skip ones I can't get a basic premise for in under a minute. Or ones that are literally just your weird fetishes.

Mr. Peanut and Explosive diarrhea

Mr. Peanut tragically sacrificed himself, then resurrected and annoyed the crap out of everyone. Explosive diarrhea is a literal pain in the ass. Through ritual blood sacrifice (involving an athame coated in feces), you can immediately resurrect whoever you just sacrificed with an overwhelming urge to irritate whoever the poop on the knife came from.

Physical things from disasters or big events that affected a lot of people, like a piece of concrete from the twin towers or a handful of barbed wire from the berlin wall, combined with the solitude of masturbation in the dark.

edit: it can't be political but it should be spiritual.
I like the first concept, and the second one completely ruins it. Good job.

Pieces of monuments carry with them the actual characteristics that the monument represents, like the Twin Towers representing war or the Statue of Liberty representing freedom. These traits are formed by a latent psychic field from humans, causing effects based on these traits in the presence of the actual monuments. Taking a piece of a monument brings some of it's power, proportional to the fragment's volume, but if anyone knows about it, it screws up the psychic field because the piece usually just looks like a chunk of concrete or metal.

Non-Euclidean geometry and granny panties.

You know how clothing can get all tangled when it gets caught on something in the washing machine? Well when granny panties do that, they can fold into higher dimensions.

@Y2K Baby and erotic asphyxiation.

The ant-air goes in the lungs, not the butt.
 
Joint back accounts and movies starring Rodney Dangerfield.
 
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