User blog comment:ShininGeek/CCC5 Maria: Queen of the Arctic Storm/@comment-7709681-20140911020136

With all those bonuses, Raging Storm's Everstorm should be an ability at its own, active for the matter; even without the second innate passive (Which is excelent by its own, 100 AP, 450 Mana and 9 Mana Regen. per 5s) is far to powerful (Deals up to 110 (+ 10% AP) magic damage per second within up to 600-range, can apply spell effects, slows up to 20% and grants allies bonus armor and magic resistance).

I think you should made the item the innate passive, and make the first innate passive an active ability.

From the rest I think she's fine