Frostform

4th-level transmutation

Casting Time: 1 action

Range: Touch

Components: V, S, M (a few drops of glacial water)

Duration: Concentration, up to 1 hour

This spell turns the flesh of a willing creature into magical ice. For the duration, or until it falls unconscious, the target gains immunity to cold damage but vulnerability to fire damage. In addition, the target has resistance to nonmagical piercing and slashing damage. The magic also allows the target to move through difficult terrain caused by snow or ice without spending extra movement.