Verglas

You fling a jet of white water toward a creature within range that will freeze upon impact. Make a ranged spell attack against the target. On a hit, it takes 1d8 cold damage, and, if the target is not flying, the area immediately under it becomes difficult terrain until the end of your next turn. 

On a miss, roll a d4, and an area five feet away becomes difficult terrain until the end of your next turn, 1 for north, 2 for west, 3 for south, and 4 for east.

The spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).