Looking for a card like {Wound Reflection} but putting cards into the graveyard.
Trying to help my friend make a quick win {Laboratory maniac} + {Traumatize}
What format?
I have a cheap build in legacy entitled "this needs a name"
Do mean something like {Keening Stone}?
I think that's the closest you'll get to what you're describing. There's no "target opponent mills X, where X is the number of cards milled this turn" yet in existence. Would be a neat concept! But probably too easily abused with {Traumatize}.
Why not just use {Enter the Infinite}
{Bloodchief Ascension} and {Mindcrank} might interest you.