Laws

The magic is activated by a chanting of the magician. The basic principle of magic is to cause the atmosphere to vibrate in a way that deviates from the laws of nature by uttering words that cannot be expressed in words, and to use that vibration as a catalyst to twist the logic of all things. If you are a skilled mage, you can easily transfer the natural phenomena you have in your mind to the real world. However, this requires a great deal of mental energy. This is why a product was invented in which the tuning to activate the magic is sealed in advance, so that anyone can handle it. The power of the thrust, the fangs with the cold air of water - everything you can think of is magic.

- Final Fantasy IV Novel Page 29