I've noticed some inconsistency that needs addressing.
For example, if Ravana only designed the block in human bodies why do Naturals not remember the countless lifetimes a soul has lived. Instead, it's less a block and more that she made the brain strong enough to suppress the soul. Human bodies are essentially just powered by a soul. Natural's bestial minds are not strong enough to fully suppress a soul. For them this is actually a good thing, because it allows just enough of the souls influence though to give them sentience. This is also why they do not have proper Changelings, as their brains can not fully suppress the spirit.
In fact, Ravana straight up got the idea for the brain block by observing early Natural compatibility tests.
Also there is disagreement over whether she killed Zion or Lopto first. That is totally world depth and not something I forgot about between writing their god entries.
Souls can influence the world when floating around between bodies otherwise Aura Arts wouldn't be possible. It just takes immense concentration and willpower, which it why spirits can't do it because they can't focus on anything, but every moment they spend trying is another moment of decay from lack of body.
Hey son, wanna' learn how ta' make witch balls?