Spell: Crystallized Vapors

You freeze the precipitation around you in icy pellets, creating a 15-foot emanation of difficult terrain; you're immune to this difficult terrain. You can launch a ball of ice whenever you Cast this Spell and the first time you Sustain this spell on subsequent turns, making a ranged spell attack against the AC of a creature within 30 feet. On a hit, you deal 1d12 cold damage and 1d12 bludgeoning damage (or double damage on a critical hit).

Heightened (+3) The damage increases by 1d12 cold and 1d12 bludgeoning.