Wrath of the Gods

This spell is from the Dark Souls spell collection.

You release a shockwave of divine force from your body. Each creature within 20 feet must make a Strength saving throw. On a failed save, a target is pushed back until they are 20 feet away from you, they are knocked prone and take 10d12 thunder damage. On a successful save, a target is pushed back 10 feet, or until it is 20 feet away from you, and they take half damage.