Courts of the Crane Clan

I'd dig seeing Asahina Akikusa use it against Yajinden.

I gotta imagine Kanpeki is off limits, unless the winner is OK with not seeing his victory fiction until the end of Hell On Earth (it could be a good device).

Shadow Dragon as a target anyone?

I am not that familiar with the lore - using this 13th Black Scroll would essentially be an evil act that would "see an entire legion of souls ushered into the Realm of Evil"?

I think I'd want to try to destroy it.

Or do something to a Crab.

Maybe have Asahina Umeko use it on Isawa Kaname.

Using the Scroll would not be per se an evil act, I think, otherwise, Isawa would have been very evil himself. It depends on what you use it on, and how. If it is to bound a malevolent entity inside, I'd say go for it. If it's just for petty revenge, it'll probably corrupt both the target and the wielder and maybe more...

Yes, you can use the scroll to trap something evil. The trapped essence is what makes them dangerous, not the scroll itself.

I see. So using this scroll to trap something evil makes it a kind of time bomb - it traps the malevolent power until the time that it is opened. So it gives people a kind of time out from the darkness? Why would anyone not use it then?