1. a very active support that is always in the skirmishes with the team or carry, that holds support and utility items
2. a magic damage support that focuses on Ice Blast from afar, away from skirmishes, but throws Ice Blast whenever needed
3. or, builds Midas then Aghs then go with carry roles mid to late game.

I know it will depend on the enemies and the role you picked, but if those things are not a factor, what is your choice of how you play this hero most of the time