Dematerializing beam

A beam of magic that disintegrates anything it reaches
You cast a beam that disintegrates any non-living object it hits unless it's imbued with any kind of magic. (Affected by Dispel Magic) Living creatures instead take 10d6 fire damage

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.