Hey,
Has anyone tried making the rules for Chaos rituals to Banish, Exorcise, or otherwise take control of daemons that are already manifest? I was thinking of making some as I have a group that many need to deny the daemon in the future and they've got no Pure Faith derivative skills but quite a bit of daemonological expertise.
After all, not only does the fluff mention rituals meant to banish but it's also reasonable. If you can summon a daemon straight from the Warp and yoke it to you will, at least for a while, then you should probably have some exorcism options. The standard rules for rituals would apply, but I'm at a loss as how to assign any Corruption Points (if at all), and how the rule of sympathy would function with what is essentially a counter ritual.
.