How Magic Works

Magic is all about your intentions, you command the light of the world around you to change and do your bidding. It’s all about your belief, have such a strong enough will over the world that your thoughts become reality. Though it is never simple, only the most powerful of mages can just think to make something happen. Most mages use a collective agreed upon way to cast a spell drawing runes, hand symbols or chants. Most spells tend to copy powers of champions.
Magic can be seen as harmful to the environment when weaker spell casters are wasteful with the light around them, using too much to do too little. This wastes the light of the environment that had not yet been unified and changes it into something that wasn't needed or damages the environment around it.
As you get better in magic you will get better at using the light around you properly.

What Magic gives you

When you invest in magic you gain one spell from your devotion, a focus you use to cast your spells, and as many spells equal to your small magic modifier. Runes equal to half your modifier rounded down, You also start with 10 charges, every small modifier you have in magic is 2 extra charges.

Casting Spells

The first thing you learn in magic is how to cast spells. To cast a spell is to put an intention into the world around you and have the light of the environment mimic what that intention is. To achieve this intention, you might choose one of the three basic ways of casting: Channeling, Somatic and Verbal. 
If you are unable to achieve your way of spell casting, you will be casting with plenty. You must make a magic save against a 10 + how much resource is poured into the spell. If you fail, your spell doesn't go off but you lose your resources. If you succeed, you only do the indirect result of the spell. Spell’s that can be upcasted can only be upcasted as much as your Magic. (Check Resources Rules). The spells you can cast are broken into basic 1-3 resource cost, moderate 4 - 6 resource cost, Advanced 7 - 9 and rituals, which are 10 resource cost. A normal mage can’t perform rituals on their own; they will instead need to go on a journey for ingredients for the ritual so that it can be performed. You don’t need to add rituals to spells you know. 
Since magic requires a little more thought than using divine, you can’t use spells as a reaction; if you want to, you must spend an action to do so. 
You have a number of spells equal to your Magic modifier, spells are chosen from gods ability lists that you have access to a starting mage has access to the following lists: Air, Earth, Fire, Frigid, Lightning, Metal, Moon, Purity, Protector, Sky, Soul, Sun, Volcano & Water.
You also gain one spell from your devotion even if you don’t have access to that list.

Channeling

Channeling is pouring your intentions through an item to perform your spells; these items tend to take up one of your hands. If you are disarmed of your channeling item you count as casting spells with penalties. 

Magical Items

There are other ways to cast spells that tend to come from items that can be found within the world, these can be good rewards to give out to your mage characters or use as plot points in running your own God Marked game.