Cleansing Beam

A beam of focused, cleansing energy descends from the sky in a 40-foot-radius, 5-mile-high cylinder centered on a point you can see within range. Until the spell ends, bright light is cast within 500 feet from the cylinder, and dim light is cast for an additional 500 feet. The beam's effect depends on position relative to it:

• Within the beam itself:
  • When a creature enters the beam for the first time on a turn or starts its turn there, it is blinded by the energy and must make a Constitution saving throw. The creature takes 40d6 radiant damage on a failed save, and half as much on a successful save. The creature remains blinded as long as it is within the beam, and once it leaves the beam it may make a Constitution saving throw at the end of each hour to regain its sight.
  • The ground and objects the beam covers is turned to ashy glass and is considered difficult terrain, with each 5-foot-diameter portion requiring 1 day to clear by hand.
• Within a 100-foot radius of the beam:
  • When a creature enters this radius the beam or starts its turn there, it is a awash by intense heat and light. It must make a Constitution saving throw. The creature takes 10d6 fire damage and 10d6 radiant damage and is blinded on a failed save, and takes half as much damage and is not blinded on a successful save. A creature may repeat the Constitution at the end of each of its turns to regain its sight.
  • The spell damages objects in this area and ignites flammable objects that aren't being worn or carried.

On each of your turns after you cast this spell, you can use an action to move the beam 60 feet in any direction. A beam that is not moved melts the ground, and melts a hole 10 feet deep for every turn it remains in the same location.

Using this spell changes your alignment to Evil. Also, let's be real, this is a 10th level spell at least.