My dear cousin shares a semi-horror story you might want to read.
The one who casts the shadow is defeated. Powerless. Helpless. Toothless. All that's left of him is his shadow that lurks.
But does it really make any sense? That life ends here? What happens to the you that is your SOUL?
But in the battle of choices, there are consequences for each, and the only reason one consequence is damned for the other lies in the strength of the entity that has been fed strong when the decision was about to be made.