Freezing Point: Makes the air in the area shoot down below Freezing, or 0 degrees Celcius. Hinders movement, makes ya cold, etc.
ColdHeart: Constant ability, I simply wear a layer of ice around my skin, organs and everything, making them more difficult to penetrate (lol rape joke).
Diamond Dust: Freezes any available water in the area and forms solid snow, or hail if you will, har as diamond. It is controlled by icy winds.
Crystal Weapon Formation: I can manipulate Ice or Water in the area to freeze and mold any weapon, also hard as diamond, and virtually inestructable excpet by my own will.
Ice Prison: Manipulates Ice to surround a foe, melt into water, and re-freeze around it.
Hyourinmaru: Summons a dragon of ice to freeze, devour, destroy, etc.
Kekkei Genkai: Fimbulvetr: Surrounds the enemy with several icebergs, encasing them in an arena of frozen mass. Diamond Dust whirls very swiftly around them, until the icebergs all come crashing down onto the foe.