When I said healer, I meant in a simple first aid sense of numbing the pain rather then curing it. Basically using the water as an icy-hot patch. Don't worry, I can play it without abusing it. 

If swamp is more appropriate for the setting I can work with that. However I think my character is going to need a little ice know how, since there isn't much else they can do in the way of anything due to the lack of mediocre bodies of water. Giving me only a water skin worth of water to work with is a little unfair when you put me up against a fire or earthbender. Their back story would involve training of course, prior to leaving the swamp, even the residents of Foggy Swamp displayed some understanding of ice.

Real quick what do you mean by good spirit? Do you mean good nature or strong willed?