Chromatic Blast

A blaze of color is sucked from your surroundings and forms into a beam of that color and corresponding element, the Dm decides from which colors you can choose in your current situation. When hit all creatures within 5 feet of the target must succeed a dc 15 Constitution Saving Throw or take 3d6 of the selected damage. On a Successful Saving throw the creatures take half damage.

1. Red - Fire 
2. Blue - Cold
3. Yellow - Lightning 
4. Green - Poison 
5. Black - Necrotic
6. White - Radiant
7. Brown - Acid   
8. Purple - Psychic

This spells damage Increases by 3d6 every 3 levels.