H2O: Cryokinesis

Cryokinesis is the ability to manipulate, generate, and control frost, sleet, ice, cold, snow and hail at will. With this incredibly strong ability, merpeople can freeze an entire room in seconds, create solid ice, freeze anything without the presence of liquid water, make it snow, and make ice in a variety of shapes and forms. Merpeople are capable of creating strong hailstorms, blizzards, or snowfall. It's the amplified version of hydro-cryokinesis that merpeople receive in the Moon Pool during a planetary alignment.