Chill Bones (3.5e Maneuver)

You bring the might of the glacier to bear on your opponent, cutting a path for bonechilling cold.

When you initiate this maneuver, make a melee attack. If it hits, it does normal damage and the target must make a fortitude save (DC 13 + your Constitution modifier) or gain Cold Vulnerability for the maneuver's duration. If they already have Cold Vulnerability, they take 50% more base cold damage. Cold-immune creatures instead take half of base damage from cold for the maneuver's duration (instead of being immune or vulnerable). This maneuver is a supernatural ability.