Afflict explosion

You point at a creature within range. A violent explosion violent occurs inside them. The target must make a constitution saving throw. it takes 10d10 force damage on a fail, or half as much on a successful save. If this kills the creature, it explodes violently, and All creatures within 10ft of the creature must make a constitution saving throw. on a failed save they take 6d6 bludgeoning damage, or half as much on a successful one.