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 - $8.40
Near Mint Non-English - $8.40
Lightly Played - $7.60
Lightly Played Non-English - $7.60
Played - $5.90
Played Non-English - $5.90
Heavily Played - $5.10
Heavily Played Non-English - $5.10
Damaged - $4.20
Damaged Non-English - $4.20