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.
NM-Mint - $11.10
NM-Mint Non English - $11.10
Lightly Played - $10.60
Lightly Played Non English - $10.60
Moderately Played - $10.00
Moderately Played Non English - $10.00
Heavily Played - $8.90
Heavily Played Non English - $8.90
Damaged - $7.30
Damaged Non English - $7.30