Chilling Smite

The next time you hit a creature with a melee weapon attack during the spell’s duration, your weapon burst with white jagged ice spikes and the attack deals an extra 1d6 cold damage to the target and causes the target to be frozen in place. It must make a strength saving throw against your spell DC, on a successful save it is not frozen in place. On a fail save, it walking speed is reduced to 0 and it is considered grapple. It can make a strength check, to break free on the end of each of its turns.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the initial extra damage dealt by the attack increases by 1d6 for each slot.