Lore and Magic Explanation

Magic is the force that holds all beings together. Tall, short, smart, barbaric, humanoid or creature. It is a negative and a positive, a natural aura, a commandment and a sin, a rise or fall. It manifests itself in death. The aura spreads back to the world and reestablishes the fabrics of the world. Yet, the restless soul can weave itself into its dispersing aura. It can mold an incorporeal form that only magic or silver can tough. Thus ghosts are the byproduct, and a terrible torture upon the soul of ArchMage Selina Vendarl.

-The Arcanos Emperitum

Which is just a little background information for ya. A little snippet of something... Much... Much Bigger... *Phew* But I digress. As a simple explanation, there are two types of magic: Arcane and Natural. Arcane is anything that changes physical properties, such as changing temperature, shifting the form of an object, and levitating. It is often considered the more destructive of the two. The second, Natural, obviously, effects things that occur in nature. Creating a flame, healing a wound, or even mind manipulation all fall under Natural magic.

Humans are able to learn Arcane magic with the help of enchanted items and memorizing spells. However, Natural magic is only available to those who are born with an affinity to it. That said, it usually takes much effort to hone Natural magic for it to be practical. Of course, there is also the fact that those who have very large amounts of Natural essence are more likely to become ghosts when they pass on...