Cold Chorus

You chillingly exhale, causing the moisture on your face to freeze and then fracture into 3 icy copies. The visages explode into shards of ice and freezing winds in a 15-foot cube in front of you. Creatures within the area must succeed a DEX saving throw or take 3d8 cold damage and fall prone as the ground within range becomes difficult terrain until the start of your next turn.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or high, the damage increases by 1d8 for each slot level above 2nd.