As part of the action used to cast this spell, you must make a melee attack with a weapon against one creature within the spell’s range, otherwise, the spell fails. On a hit, the target suffers the attack’s normal effects and is chilled by this attack such that if they take a reaction they take an additional 1d8 of cold damage.  

At 5th level, the melee attack deals an extra 1d8 cold damage to the target, with damage rolls increasing by 1d8 at 10th level and 15th level.