[quote=@RezonanceV]
[@Prisk]

You explained it well! :)

I think lol.

Let me reframe and see if it adds up the same on your end. Aeons are hosts to Spirits. Spirits are controlled by their hosts. Spirits execute moves/attacks/techniques through the host's body via their permission. Therefore, the blood manipulation is being done by the Spirit, not the Aeon. The Aeon is simply directing the Spirit's actions?
[/quote]

Yes, spot on. So, what I want to say is that you can treat blood as an element. I simply listed the common ones seen, but they're by no means the [i]only[/i] ones. And then, either apply the techniques I listed as well or apply one or more of your own, but stick to them. I did it this way to sort of balance it all out and prevent participants from making up things/powers on the fly. That is not to say that it's impossible to learn new techniques, but it should be like any other skill in life, which takes time to master.