Chilling Smite

The next time you hit a creature with a melee weapon attack during the spell’s duration, your weapon flashes with a burst of severe cold, and the attack deals an extra 3d8 cold damage to the target. The target must also make a Constitution saving throw. On a failed save, its body is frozen and stuck to the ground. The target is restrained until the start of your next turn, or until it or another creature within reach of it uses an action to break away the ice.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the initial extra damage dealt by the attack increases by 1d8 for each slot level above 3rd.