Open a sealed Magic booster pack, reveal the cards, and put one of those cards into your hand. (Remove that card from your deck before beginning a new game.)
Make your judgment wisely: The right pack will let you defeat your nemesis, but a poor choice can only end in torment. And Homelands.
Near Mint - $15.60
Near Mint Non-English - $15.60
Lightly Played - $14.10
Lightly Played Non-English - $14.10
Played - $10.90
Played Non-English - $10.90
Heavily Played - $9.40
Heavily Played Non-English - $9.40
Damaged - $7.80
Damaged Non-English - $7.80