Tundras Blast

You unleash a wave of ice cold energy in a 60 foot radius centred on yourself. All shallow water in the area freezes, and any deep water becomes incredibly cold and forms a thin layer of ice. Vegetation is frozen and wilts, and exposed flames in the area are doused.

The ground in the area is covered with slick ice. When a creature enters the spell's area for the first time on a turn or starts its turn there, it must make a Dexterity saving throw. On a failed save, it falls prone.