Whee. Modifying how replacement effects work. I think this can work, based on the precedent of "this damage can't be prevented or redirected".

But what does it do? I think it hoses madness. It shuts down Library of Leng, not that anyone cares. If you've bounced someone's commander, I guess it lets you force them to discard it without letting them move it to the command zone?

I feel like you must have had some specific use case in mind for this, Link, but I can't figure out what it is. Give us a clue?

To be honest, I had no plans for it. I just conceived of the line of rules text while pondering Levelheaded General.

Alex, looking back at this I'm just as puzzled as you were when you first saw it.

You know, this would save discarded creatures from the effects of Anafenza, the Foremost.