Before I make a sheet.

Question.

I wanna make an Ice Based character.

My concept of this would be.

Abstract Freezing. Being able to freeze abstract concepts like thoughts, spirit/soul, space, ice that makes one insane because you make their heart cold lol and lol Esdeath time etc. I'm not going the overpowered route which I am avoiding but I'm figuring out ways on how to make the usage of ice unique. Anything that is abstract.

Can you help me?