This is not a skill to get at level 1. If you do so, expect t loose.
Mid game, the middle rnaks of this skill are AMAZINGLY useful. Its the best AOE which you can cast from safety (except for regulus snipes).
I do agree that in terms of flavor, I woudl prefer an ice storm that had a debuff as well/insead of a damage component.
While we are at it, can the effects of the torchbeaeres passive aura be a bit more wide range?