They will have to consume at least one person completely per year, or else, they will become monsters that have no control over their bodies.
They will also lose all empathy. They would not feel whatsoever sympathy for anyone else except people that are extremely close to them.
And the last thing was... they would have to endure unimaginable pain. It would be like taking the pain that John had endured and multiply it with a hundred.
There was a high chance that the person who was injected would die, or break due to not being able to bear the pain.
Harry looked at the three brothers in their eyes one by one while explaining the benefits they can gain from this injectable, and also the negatives that were associated with the injectable.
