Combine that with Virtue of Loyalty, and you've got an easy way to make your flying Mockingbirds, Seraph, Sirens, and Wardens massive and difficult to deal with
It gives all your creatures +1/+1, trample, and infect until end of turn
As a general purpose card you should avoid this but now and again it is just the ticket
Having multiple artifacts with the same name is easier these days due to the prevalence of Treasures, Clues, and Food tokens, but youll still need this card alive on the battlefield enchanting an artifact to do the trick
You can print MTG proxy cards at home, or by using a service such as PrintMTG, where you can import decks and print them on demand
Dark Ritual is a classic Magic staple, but its not what we want to do here