Elemental Beam

When you cast this spell, choose two between fire, cold, lighting and acid. A stroke of elemental energy forming a line 100 feet long and 5 feet wide blasts out from you in a direction you choose. Each creature in the line must make a Dexterity saving throw. A creature takes 3d6 damage of the first type damage and 3d6 of the second type damage on a failed save, or half as much damage on a successful one. At Higher Levels: If you spend a spell slot of 5th level, increase the damage of each type you chose by 1d6. The same goes for 7th and 9th level.