Effulgent Eruption

A radiant blade of silver light is stabbed into the ground, rupturing the earth beneath the target location and erupting with explosive light. Each creature in a 30-foot-wide and 60-foot-tall pillar must make a Dexterity saving throw. A target takes 6d10 radiant damage on a failed save, or half as much on a successful one. The earth disturbed by the spell becomes difficult terrain for one hour.

At Higher Levels: When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d10 for each slot level above 4th.