They are sort of like that priest you thought about playing a long time ago that was a battle priest and didn't use weapons. Even stranger, they are sort of either midfielders or long-rangers, depending on which side you pick. If you pick single target damage and control, they are long range. If you pick lots of ae with horrible side effects, you mid-field it. Also, you get summons, maybe two at every daily spell level. You can also be a pseudo healer, but not really at all. Though you will sometimes let people spend surges and dole out hit points.
Some of the really weird stuff? There are entirely power lines that are dedicated to you dazing yourself. It's pretty bizarre and, at first blush, it looks kind of overwhelming because it's almost entirely utility and finesse.
That being said, I like what I have played of it thus far. It's a pretty nutty class with some nice tricks to whip out.