You conjure five bitterly cold balls in your hand. A creature can hold a ball, hand it to another creature, throw it up to 60 feet, or use it as ammunition for a sling or appropriate weapon. A ball shatters on impact and explodes in a 15-foot radius.   Each creature within the area must make a Dexterity saving throw or take 3d8 cold damage and have its movement speed halved until the end of its next turn. On a success, it takes half as much damage and suffers no other effects. When the spell ends, any remaining orbs evaporate.