Deep Howl

A dim streak flashes from your palm to a point you choose within range and then blossoms with A high-pitched Howl into an explosion of Ice. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. On a failed save, a creature takes 6d8 cold damage and is hindered by ice formations for 1 minute, or until it or another creature within reach of it uses an action to break away the ice. A creature hindered by ice has its speed reduced to 0. On a successful save, a creature takes half as much damage and isn’t hindered by ice

The ice spreads around corners. It Freezes liquid objects in the area that aren't being worn or carried. Creatures that are caught in the blast area are hindered by ice formations for 1 minute.

A creature killed by this spell becomes a frozen statue until it thaws.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.