Uthanda-Ha's Kaleidoscopic Cannon

You conjure a cone of radiating stained glass to spew out against your enemies. You conjure a violent cone of glass and radiant light in a 40-foot cone originating from the caster, each creature in the cone must make a Charisma saving throw or take 2d12 piercing damage and 2d12 radiant damage and suffers the blinded for 1 minute. If the creature succeeds the save they take half damage and are not blinded. A blinded creature may retry the save at the end of each of its turns and the condition ends on a success.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d12 piercing and radiant damage for each slot above 3rd.