Otiluke's Polar Screen

This spell creates an immobile misty, bluish-white screen of energy that can be shaped to form a wall, hemisphere, or sphere. Any creature passing through the polar screen is affected as if the creature suddenly passed through a freezing blizzard. Any creature failing a saving throw vs. spell is coated with ice crystals for 1d4+1 rounds (until the crystals melt away), during which time the creature suffers one point of cold damage per level of the caster.

The creature is also severely chilled, suffering a -4 attack penalty until the ice melts. A creature making the saving throw is affected by the ice crystals for only one round. A melt spell rids a creature of the ice crystals immediately, while a fireball, but no other flame, can destroy the polar screen itself.

The material components are a thin sheet of fine lead crystal and a few bluish-white quartz crystals, all of which vanish after the spell is cast.

Notes: Uncommon or rare spell (WoG).