Chromatic Blast

You call upon your chromatic connection to the various elemental planes, and condense whatever power you are able to most easily channel into a bolt of power, and hurl it at a target within range. Make a ranged spell attack, which deals damage equal to 2d8 plus your spellcasting ability modifier on a successful hit. If at least two damage dice land on the same number ("doubles") then you may roll an additional 2d8 damage dice. Select a damage type for the spell based on the damage dice you have rolled, based on the following table:

d8 / Damage Type
1 / Acid
2 / Cold
3 / Fire
4 / Force
5 / Lightning
6 / Poison
7 / Psychic
8 / Thunder 

(For example, if you have rolled 1, 2, 2, and 4 for your damage dice, you may select either acid, cold, or force for the spell's damage type. However, you could not select fire, lightning, poison, psychic, or thunder, because you did not roll any of those damage values.)

At level 7 or above, your Chromatic Blast deals 3d8 base damage. At level 14 or above, your Chromatic Blast deals 4d8 base damage.

You may cast this cantrip as a first level spell or higher. Add one additional d8 to the initial damage roll per spell level it is cast at. (This stacks with the bonuses available at level 7 and 14.)