Void wave of Destruction

You strike the ground, creating a burst of Void energy that ripples outward from you creating uneven terrain. Each creature you choose within 50 feet of you must succeed on a Constitution saving throw or take 4d10 psychic damage, as well of 5d6 necrotic damage, and be knocked prone. Creatures within the area of effect are silenced(magic is nullified) until they leave the zone. A creature that succeeds on its saving throw takes half as much damage and isn't knocked prone.