By my noble melons, this is one exceptionally edgy roleplay I've found myself taking part in. Not that I mind. I'm sure the angels, templars and warrior spirits might have a few things to say about it though.
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If they're ghosts, can I manipulate them with my spirit magic? This is very important for my battle strategy. Dank you ahead of time~
Now I don't think he meant ghosts quite like that, but while you're at it you can just give yourself a contingent of ghostly craftsmen and women that abide by rules that keep them from being combatants. That sounds like it'd be very reasonable.