Basically the way it works, as is printed on the card, is that you can cast it when you declare your attackers, turn your attacking creatures face-down and then shuffle them around
Since youll have more cards than you can put in your deck, youll have a handful of cards left over
Starting with the artifacts that force everyone to draw cards, be it because of a triggered effect or activated effect, we have Howling Mine, Temple Bell, Otherworld Atlas, Font of Mythos, Teferi's Puzzle Box and Folio of Fancies, which, besides forcing everyone to draw cards, can be a possible win condition, bringing you the victory as your opponents lose through deck out
Click Confirm on it to get a copy of the card
Our rare
However, if you're only interested in ST16-004-shanks, buying singles is probably better