Timeball

You use your silver dusted fingers to pull a fragment of time from a stop watch. You put your fingers of both hands together and pull apart as a magical clock forms, as it grows bigger it spins around and deconstructs. You slam your hands together and point a finger where you want it to go. When the spell activates a 20-foot-radius sphere that is translucent appears, inside it looks like time is slowed and creatures look aged. Every creature in the sphere must make a Dexterity saving throw. A target takes 4d6 phshic damage when the sphere expands and 4d6 force damage as the sphere implodes on a failed save, or half as much damage on a successful one.

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.