A surge of pure, arcane power blasts from your spellcasting focus. Each creature in a 60 foot cone must make a constitution saving throw. The cone passes through total cover. A creature takes 12d8+25 (79) force damage on a failed save, or half as much damage on a successful one. A creature reduced to 0 hit points is obliterated.

An obliterated creature and everything it is wearing and carrying, excluding magic items, instantly die and leave behind no trace of its physical form. The creature can be restored to life only by means of a true resurrection or a wish spell.

Any magical creation caught in the cone is immediately dispelled or destroyed, such as a Wall of Force, a Bigby’s Hand, or summoned creatures such as from the Conjure Animals or Summon Fey spells. Spells from the schools of enchantment and transmutation are unaffected by this effect.
If this spell comes in contact with a barrier created by another caster using the spell Zane's Immovable object, the barrier is destroyed and all creatures within 30 feet of the barrier must make a dexterity saving throw against your spell save DC or take 20d6 force damage, taking half damage on a successful save. Creatures inside the barrier have disadvantage on this saving throw.