What would happen if you used a True Time-Turner to stop his mother, Merope from dying and leaving Tom Riddle to be an orphan or preventing from being born? Would it actually stop the wars and save the lives of everyone who was killed like James and Lily Potter, or would it cause a number of people from being born or a new threat to take Voldemort's place? Which would you choose, keep Tom from going down the path he did and become Lord Voldemort or kill someone like his parent(s) or baby Tom to keep him from being born or growing up.