Not only does it stock your graveyard for graveyard shenanigans, it will likely draw you a creature or land from among those milled when it enters the battlefield or attacks
I discovered, however, that Daniel had constructed an absolutely absurd creation, which I dubbed The Blue Vise. It was basically Mox Sapphires, Black Lotuses, Ancestral Recalls, a few Timetwisters, and about a half dozen Black Vises
You choose the value of X as the first triggered ability is resolving, then you may pay that much mana to draw that many cards
I do also want to make a few more cuts by thinning out any expensive morph creatures that lack useful abilities beyond raw combat stats
Pulling that alt-art out of the first-ever wave of packs is a real piece of hobby history