Frost whip

Frost whip was a divine magic spell given to specialty priests of Auril, the Frostmaiden. It produced an insubstantial, flexible beam of cold that could be used as a weapon.

Effects
When cast, a six foot (1.8 meter) beam of frost four inches (10 centimeters) in diameter emitted from the caster's hand. It was flexible like a whip but insubstantial, passing through objects and foes alike, attacking all within its reach if swung about. The wielder could also brandish it in front of his or her body, or wave it across an opening, forcing enemies to try and avoid its touch in order to attack.