In The Aztec Kings, Susan D. Gillespie states that composite deities, such as Kukulkan or Quetzalcoatl, serve as mediators between humanity and the gods, allowing the gods to live in both worlds ...

Here, in this store of unborn souls, they waited until the gods decided to place them in their mother’s belly. Aztec adults also firmly believed in the divine supervision of childbirth ...

"There were several Aztec gods that were represented by skulls, so they were probably invoking these gods. I don't think they were supposed to have specific powers or anything like that." ...