Compelled Combustion

As you cast this spell, your eyes glow fiery red as you attempt to make a creature explode. Choose one creature that you can see within range. The target must succeed on a Wisdom saving throw. On a successful save,  the target takes 2d12 force damage plus 2d12 psychic damage. On a failed save, the target takes 3d10 force damage and 3d10 fire damage, and it explodes, causing all creatures within 20 feet of it to make a Dexterity saving throw, taking 6d6 fire damage on a failed save, or half as much on a successful one.