I hope he does a slow painful death of an Obscure disease that makes his death a prolonged experience similar to torture.
That way he can pay even a fraction back of pain, destruction and death through suffering that he has inflicted in life.
More than all this, I hope these people wake up with a deep change in their heart, i don’t care if it’s through magic, NDE, or gods will. We all deserve a better world, stop getting in everyone’s damn way.