Cone of Cold

When this spell is cast, it causes a cone-shaped area of extreme cold, originating at the wizard's hand and extending outward in a cone 5 feet long and 1 foot in diameter per level of the caster. It drains heat and causes 1d4+1 points of damage per level of experience of the wizard. For example, a 10th-level wizard would cast a cone of cold 10 feet in diameter and 50 feet long, causing 10d4+10 points of damage.

Its material component is a crystal or glass cone of very small size.