Ice Cream Sand Witch

I need no introduction, but my name is Icy
I'm so stylish my sand castles are pricy
Cold rhymes and fire breath, you can call it freezerburn
One verse will end this, you don't even get a turn 
I attack my foes with intensity and grace
My skill's astronomical, it goes beyond space 
If you're on my team then you're living the dream
Otherwise you're buying us all ice cream
I've got people everywhere, you can't escape our vision
And we can all roast with utmost precision 
I think that's enough to make my point clear
So that's all for now, I hope you have a good year