Well this is certainly interesting, i don't think im gonna have time to finish but i will start. The problem is I will have to avoid copying stuff like avatar, magic the gathering, naruto and the 1000 other element based programs/games ive seen and be unique.
Ok, my idea is a firebreathing witchdoctor... i don't think im gonna do anymore until early next week but i just wanted to get my idea down... took ages to get a good mask design and the legs are still giving me trouble. Gonna have the whole body tattooed in a firey style, add some feathers to the shield and probable some hanging off a string around his wrist.
You say the staff is the source of the magi's power, and if it's broken they lose that link. What happens if a magi gets hold of another magi's staff? You also said it's difficult for magi's to control more than one area of magic; are you saying it's impossible?
Phrix is right, the staff is a lifeline linked specifically to the individual and as such it is useless in the hands of any other mage.
As for controlling more than one element it is not impossible but someone might be able to control two, at most three other elements but these types of people come around one every 5 thousand years, that's how rare they are. Also every element has an opposite:
Earth - Air
Fire - Water
Light - Dark
If a mage did control more than one element, they would not be able to control two opposite forms.
@Kafka Dreams The staff is a staff. It can be one or two handed but it is still a staff. Mages can carry other weapons though, think of Gandalf with his staff and sword.
The idea for this character is that in the Dark Tribe, death is seen as an opening into 'the other side' which is a vast source of power, and mages are experimentally created by being taken there and brought back. When twins are born, both are sacrificed in infancy and their hearts are placed into an hour-glass, before the bodies are left in the underground chambers of the church. When a week has passed, the bodies are brought outside. One is buried and the other is revived, his/her heart is replaced with a magical stone. This surviving twin is now assumed to carry the souls of both themselves and their sibling in the hourglass, a source of immense power. The glass is fitted into a staff and the child is raised as a mage: a seer, a warrior, and a spiritual leader.
(The staff is included, laid across her lap, just isn't too clear from this size.)