Frostbite

Cast Time: 1 Action | Range: 60 ft
Mats: V, S | Duration: Instant
You cause numbing frost to form on a creature.
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.
Levels: +1d6 @ 5th (2d5), 11th (3d6), 17th (4d6)