[@Delta44] Magic is quite simple in the sense that it works like the elements works. Magic is mostly limited by imagination and experience within the field. To properly cast spells you need to understand how the spell works. To improve it further then you need to know how the "element" works. For example superheat a rock and fling it towards your opponents and you've just chucked plasma at them. If someone throws mud at you; you can turn it solid with heat and air manipulation.
There are summoning, blood, necro, daemonic magic and stuffies as well, ofc, which work in a similar principle.

As for character creation it's quite simple as well. 
Basic CS. If you want to be a master mage, then you need the age, and background to support it. For every perk there needs to be an equal negative or reason for it.

And starting would be whenever we get at least four players. I can run it with less, but it's more fun with more.

[@SpicyMeatball] Yes indeed.