Cinderfall

A thousand motes of fire momentarily linger in the air in front of you before streaking towards your foes. Choose a point within range, each creature in a 5-foot radius must make a Dexterity saving throw. They take 3d6 fire damage on a failed save, or half as much on a successful save.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for each slot level above 1st.