Demonic Cataclysm Pact Spell

You call forth a burst of infernal energy from the depths of the Abyss, unleashing both fiery and forceful destruction. Choose a point within range; each creature within a 20-foot radius of that point must make a Dexterity saving throw. On a failed save, a creature takes 5d6 fire damage and 5d6 force damage as hellfire and a wave of concussive energy radiate outward. On a successful save, the creature takes half as much damage.