Chromatic Wave

A sphere of magical energy erupts from you.  You choose acid, cold, fire, lightning, poison, or thunder for the type of sphere you create.  Each creature in a 10-foot sphere originating from you must make a Constitution saving throw. On a failed save, a creature takes 2d8 damage of the type you chose. On a successful save, the creature takes half as much damage.

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