The Enchantment Stands Alone

Barren Glory will be the game-winner, as this combo is based completely around it. If it's the only thing on your field, you win. Leave the hand-discarding to Lion's Eye Diamond.



And here's the Lions Eye Diamond.

Then Karn says hi, exiling your Lion's Eye Diamond and Barren Glory. And then he says bye, and restarts the game with only the Lion's Eye Diamond and the Barren Glory. You win.