Nlemeanya was growing weary.

She had spent the greater part of Her existence in acts of creation after creation. She had created not one, not two, but THREE continents, an entire race of people, helped that race of people to spread out across massive distances, and assisted in their advancement to become strong enough to form self-sustaining kingdoms. She did not know how much innate power She and Her brethren had, but She could tell that Hers was approaching its limits.

But there was more that She had to do before She could finally rest. And one of these things was to bring into the mortal realm the ability to manipulate Vis.

Vis is an ethereal energy that flows through everyone and everything in the mortal plane. Nlemeanya and other Primordial beings often utilize and shape it in order to bring their action into reality, whether that be creating mortal beings, land, climates, or magical artifacts. Some mortals too are born with a special sensitivity to Vis, and through hard work and study can find small ways to manipulate it - not on the scale of Primordial beings or divine avatars, of course, but in ways that can seem miraculous and fantastical to mortal beings.

Nlemeanya, of course, was not looking to have the mortal races below freely and fully manipulate Vis, of course. That would be disastrous for the environment taking shape below, and would stunt their ability to fully experience and appreciate life, which had always been Her ultimate goal. So She decided that if mortals were going to learn to manipulate Vis, they would have to do so as a result of experiencing life - through emotion.

So, slowly but surely, She worked to attune the Vis throughout the mortal plane to the feelings and emotions of the mortal races. Different individuals would have different sensitivities to Vis, and different levels of influence over it, but those with the right internal power would find themselves able to manipulate the world around them through the experience of extremely strong and visceral emotion. A Vis-sensitive child fearful of a monster in the woods might find it thrown back from her as a result of her screams; a mother staring with love at her newborn baby might find the flowers and trees around her blooming with life and color, regardless of the time of year. A Vis mage who has lost control of their anger might accidentally find themselves setting the building they reside in on fire; and a man mourning the loss of their brother might find the earth, trees, and men around him to be weaker as well. It can take years of study and a complete understanding of one's own emotions to properly channel and control Vis, and even mages who have worked for years to master its manipulation can find themselves in situations where they lose control.

With this work done, Nlemeanya returned to Her Perch to rest and observe. Looking upon Her creations, She hoped that this new attunement would make the experience of live all the more vivid.

10 points to create a system of magic. Vis is not a system in and of itself, but rather an ethereal energy that flows through all people and things, an energy that the Primal Lords themselves often manipulate to enact their actions. Rare individuals may find themselves particularly sensitive to Vis, and can learn how to control it. Specifically, Vis across the mortal plane is attuned to the feelings and emotions of the mortal races, with move visceral emotions influencing Vis in greater and less controllable ways.

[Meta] If other primal lords want to fit Vis manipulation into their magic systems as a way to explain how their magic systems affect the world, or how their magic practitioners use the magic system they create, they can absolutely feel free to do so.