A 5-foot ethereal clock with 24d6 hit points is suspended above a chosen point within range but in the ethereal plane. An illusory clone of the clock emanates below you. The time on these clocks rapidly and sporadically changes for the duration of the spell. Every round, the clock loses 6 hit points. When the hit points of the targeted clock drops to 0, the clock shatters and the spell ends. Each creature in a cylinder underneath the clock area makes a Dexterity saving throw. A creature takes Force and Thunder damage equal to the total accumulated damage on a failed save or half as much damage on a successful one.

The spell’s base damage is doubled, and the clock's radius expands 5 feet whenever your turn ends and the spell hasn’t ended.

On each of your turns after you cast this spell, you can use a bonus action to move the clock 30 feet in any direction.

If concentration on this spell is lost, the suspended clock centers above the illusory clock before the spell ends.