"Gods. Nature. Folk."

Perfect. All these three are inseparable as one for us.

It's all quite easy to understand. The Gods are beings and obviously not the same as their different children/Folk and the high cultures they made. There are no distinct "Norse/Egyptian/Mayan Gods". (That is a filter for the weak-minded to see more of themselves in their highest ideals.)

We are in a war between the spirit worlds in this world. I'm not interested in whatever "spiritual" is supposed to mean for the geeks.

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"Reincarnation is done through the bloodlines."

Yes, old shaman knowledge and tradition. Technically speaking you could reincarnate in whatever, but you're not allowed to. Also, most prefer their own bloodline. All of reality isn't available in false or dimwit books that some seem to rely on. Remember that I don't "do" any "beliefs", be they "foreign or domestic"...

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"The most profitable things are war and illness. So it's easy to understand what's going on."

Your answer would be that the reason is greed/money?

My answer is that the reason is to murder. We are in a war.