Transposition Blade

When you cast this spell, and on each your subsequent turns as an action, you conjure a thin three-inch-wide plane of transposition magic and hurl it through the air towards a target transporting all matter that the plane passes through to be scattered across the multiverse.  All creatures within a 30 ft. cone of you must make a dexterity saving throw. They take 15d10 + 40 force damage on a failed save, on a success, the target takes no damage. Unattended objects automatically fail the saving throw and nonmagical objects take maximum damage. 

A creature slain by this effect can only be revived by the true resurrection or wish spells.