Alter the rules of reality. Notably matters of life and death. And connected to this is the presence of the 'Filial' wings. The Third Party members that we have seen have the large, flight-capable wings, we and Jacob have these smaller ones. The Hunter had none. Removing one's wings kills them, and when we next see them alive, they once again have wings. What would have become of new residents if they hadn't had wings attached?

[A pause as he tries to sum up all of the questions he's coming up with.] What are these wings?