Brain Overload 6th Order Metamorphosis Power

You unleash a sudden surge of energy in the mind of a creature you can see within range.  The target must make a Constitution saving throw, taking 14d10 psychic damage on a failed save, or half as much damage on a successful one.  If the target has a brain and this damage reduces them to 0 hit points, their brain explodes.  (For a target with multiple brains, all their brains explode.). A target that can’t survive without their brain or brains (as determined by the GM) dies instantly.