Let katanas delimb the person holding them

[Lady Birb]

I'm not sure how this would nerf arm-stapled katanas? Unless you accidentally forget which hand you're using and then lop off a limb.. is that what you're getting at Lord Birb?

As for the idea itself, this would only really be a nerf to katana wielding clowns, who would roll a chance of hitting themselves anyway.

Disarming someone who has an armstapled item makes them hit themselves