Frostbite

Artificer    Druid    Sorcerer    Warlock    Wizard

Evocation cantrip

Casting Time: 1 action
Range: 60 feet
Components: V, S
Duration: Instantaneous

You cause numbing frost to form on one creature that you can see within range. The target must make a Constitution saving throw. On a failed save, the target takes 1d6 cold damage, and it has disadvantage on the next weapon attack roll it makes before the end of its next turn.

At Higher Levels: The spell's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).

Source: Elemental Evil, p. 18