Arm of Ice

You stick your arm out as if you were grabbing something, and shoot out a giant arm made of ice that can grab and crush objects and enemies. After the arm comes in contact with an enemy or object and uses great force via crushing or smashing it will shatter. If it is not shattered the arm will stay for 10 minutes and can be controlled as if it were a normal arm. Anything the arm comes in contact with will feel a surge of cold and if it is not a living creature it will be frozen solid on the spot. The enemy has to make a DC17 dex saving throw. On a failure they take 6d8+5 frost damage, on a success the arm misses and the enemy takes no damage. Missing will not shatter the arm and you are free to use the same attack next turn without expending any spell slots. When lifting with the arm or moving objects it has a strength of 19.