Magic is the art of warping reality - that was an established fact. The world flows in a particular way, this way is defined by the natural laws that ensure the world's stability. A mage, or any wielder of magic, and mana can tamper with this flow and manipulate it, to a limited degree. A mage can spawn fire in their palms, make water levitate, cause the earth to ripple, steady wind to grow turbulent, generate lightning from their fingers, accelerate plant growth, heal injuries, and many more. However, an abstract line is drawn in place that inhibits them from warping the natural laws beyond a certain point.