Chaos Reach

A beam of concentrated magic erupts from the caster in a line. This beam lasts for 2 rounds, and is 5ft wide. When casting this spell, roll a d8 to determine the spells damage type. Every target within this beam must make a Dexterity Saving throw. On a fail the creature takes 12d6 damage, on a success the creature takes half damage. At the start of the second round the caster can move the beam to a new target and the beam physically moves to the command of the caster and every creature that the beam passes over has to make a Dexterity Saving Throw. Any creature that enters the beam while the spell is active must make a Dexterity Saving throw. The spell ends at the beginning of the casters 3rd turn, or if the caster chooses to end it early (no action required).