Deep Magic Surge

A powerful shockwave of ancient magic disperses from you. Each creature within a 20 foot sphere of you must make a Dexterity saving throw. On a failure they are knocked back 15 feet, gain the prone condition, and take 3d8 force damage, and 3d6 psychic damage. On a successful save they are knocked back 5 feet, and suffer half damage.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the force damage increases by 1d8 for each slot level above 4th.