Bolt from the Blue

You immediately vanish and become part of the sky. You are incorporeal, untargetable and gain darkvision out to a range of 120 feet.

At the start of your next turn you teleport into an empty space within 120 feet. Each creature within 10 feet of the space you arrive in makes a Constitution save, taking 3d10 thunder damage on a failure, or half damage on a success. Creatures wearing armour have disadvantage on this save. Thunder booms out to 300 feet away.

At Higher Levels: The damage increases by 1d10 for each slot level above 4th.