Blizzaga (Blizard III)

You manipulate ice aether to create a localized blizzard at a point you can see within range. Each creature in a 20-foot-radius sphere centered on that point must make a Constitution saving throw. A target takes 6d6 cold damage on a failed save, or half as much damage on a successful one. The ground within the blizzard becomes coated in slick ice for 1 minute or until melted. A creature traversing the slick ice at more than half speed is required to make a DC 15 Acrobatic check at the start of the movement. Failure causes the creature to fall prone at the start of the movement.

At Higher Levels: When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.