Vomit Lava

You throw up lava. Each creature in a 15-foot cone must make a DEX saving throw. A creature takes 3d6 fire damage on a failed save, or half as much damage on a succesful one. 

You also take 1d6 fire damage while catsing this spell unless you are immune to fire. 

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. Als you own damage increases with 1d6 for each level above level 1.